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1.
I. N. Polyakova E. A. Malinina V. V. Drozdova N. T. Kuznetsov 《Crystallography Reports》2008,53(2):253-256
The compound [Ag2(B10H10)(DMF)] is synthesized, and its crystal structure is studied (R = 0.0699 for 2836 observed reflections). The coordination number of each of the four independent Ag atoms is 4 + 2. The nearest
environment of the Ag(1) and Ag(4) atoms consists of two O atoms of the DMF molecules and two BH groups, and that of the Ag(2)
and Ag(3) atoms consists of four BH groups. All the Ag atoms additionally form weak bonds with two BH groups. The Ag-O and
Ag-B bonds lie in the ranges 2.319–2.465(9) and 2.46–2.70(1) ?, respectively, and the Ag⋯B distances are 2.89–3.25(1) ?. Due
to the binding of each polyhedral anion to five Ag atoms, layers are formed. Bridging DMF molecules link layers into the three-dimensional
framework.
Original Russian Text ? I.N. Polyakova, E.A. Malinina, V.V. Drozdova, N.T. Kuznetsov, 2008, published in Kristallografiya,
2008, Vol. 53, No. 2, pp. 279–282. 相似文献
2.
Shishir Ghosh Faruque Ahmed Rafique Al-Mamun Daniel T. Haworth Sergey V. Lindeman Tasneem A. Siddiquee Dennis W. Bennett Shariff E. Kabir 《Journal of chemical crystallography》2009,39(8):595-602
Abstract Treatment of Mn2(CO)10 with 2-thiazoline-2-thiol in the presence of Me3NO at room temperature afforded the dimanganese complexes [Mn2(CO)7(μ-NS2C3H4)2] (1) and [Mn2(CO)6(μ-NS2C3H4)2] (2) in 51 and 34% yields, respectively. Compound 1 was quantitatively converted into 2 when reacted with one equiv of Me3NO. Reaction of 1 with triphenylphosphine at room temperature furnished the mononuclear complex [Mn(CO)3(PPh3)(κ
2-NS2C3H4)] (3) in 66% yield. All three new complexes have been characterized by elemental analyzes and spectroscopic data together with
single crystal X-ray diffraction studies for 1 and 3. Compound 1 crystallizes in the orthorhombic space group Pbca with a = 12.4147(2), b = 16.2416(3), c = 19.0841(4) ?, β = 90°, Z = 8 and V = 3848.01(12) ?3 and 3 crystallizes in the monoclinic space group P 21/n with a = 10.41730(10), b = 14.7710(2), c = 14.9209(2) ?, β = 91.1760(10)°, Z = 4 and V = 2295.45(5) ?3.
Graphical Abstract Two new dimanganese complexes [Mn2(CO)7(μ-NS2C3H4)2] (1) and [Mn2(CO)6(μ-NS2C3H4)2] (2) were formed when [Mn2(CO)10] was treated with 2-thiazoline-2-thiol in the presence of Me3NO. Compound 2 reacts with PPh3 to give the monomeric complex [Mn(CO)3(PPh3
)(κ
2-NS2C3H4)]. The structures of 1 and 3 were established by crystallography. Shishir Ghosh, Faruque Ahmed, Rafique Al-Mamun, Daniel T. Haworth, Sergey V. Lindeman,
Tasneem A. Siddiquee, Dennis W. Bennett, Shariff E. Kabir Investigations of 2-thiazoline-2-thiol as a ligand: Synthesis and
X-ray structures of [Mn2(CO)7(μ-NS2C3H4)2] and [Mn(CO)3
(PPh3)(κ
2-NS2C3H4)].
相似文献
3.
Junqing Chen Min Sun Jin Cai Meng Cao Wen Zhou Min Ji 《Journal of chemical crystallography》2011,41(4):519-522
Abstract
(4α,8β,13β,16β)-13-methyl-16,18-diol-17-norkaurane was synthesized by esterification and reduction of isosteviol, respectively. The structure of the title compound was established by spectral analysis and X-ray diffraction studies. The compound crystallizes in the orthorhombic space group P212121 with unit cell parameters: a = 7.3705 (14) ?, b = 13.508 (3) ?, c = 20.139 (4) ?, V = 2005.1 (7) ?3, Z = 4. The conformation of rings A and B is chair, whereas the conformation of ring C is unsymmetrical distorted chair. The stereochemistry of the A/B and B/C ring junctions is trans, while the five-membered ring D adopts an envelope conformation. 相似文献4.
Queite Ant?nia de Paula Sauli dos Santos Javier Ellena Eduardo E. Castellano Alzir A. Batista 《Journal of chemical crystallography》2009,39(7):519-524
Abstract A dinuclear ruthenium(II) complex double-bridged by an N-aromatic ligand 2-mercaptopyridine (2-pyridinethiol or 2-pyridyl mercaptan) and a methyl sulfoxide (dmso) have been characterized
by X-ray crystallography. The reported compound with formula [Ru2Cl3(μ-pyS)(μ-dmso)(dmso)4] · 2H2O, [C15H36Cl3NO7S6Ru2] (P2/c, a = 13.8175(2) ?, b = 10.5608(2) ?, c = 21.3544(3) ?, β = 106.090(1)°, V = 2,994.05(8) ?3, Z = 4) represents a seven-membered ring system with both rutheniums in an octahedral geometry. All the hydrogen bonds (C–H–Cl)
and the van der Waals contacts give rise to three-dimensional network in the structure and add stability to the dinuclear
compound. To our knowledge, this is the first time that the formation of a dinuclear ruthenium(II) complex double-bridged
by an N-aromatic ligand 2-mercaptopyridine and dmso have been reported. The study also provided valuable insight into bioinorganic
chemistry as continuing efforts are being made to develop metal-based cancer chemotherapeutics. A major feature of this paper
is the resolution of a double bridged ruthenium structure which contributes to a better understanding of ruthenium reactivity.
Index Abstract A major feature of this paper is the resolution of a double bridged ruthenium structure which contributes to a better understanding
of ruthenium reactivity.
相似文献
5.
Three Sr2+ compounds with the Edta
4− and H2
Edta
2− ligands—Sr2(Edta) · 5H2O (I), Sr2(H2
Edta)(HCO3)2 · 4H2O (II), and Sr2(H2
Edta)Cl2 · 5H2O (III)—are synthesized, and their crystal structures are studied. In I, the Sr(1) atom is coordinated by the hexadentate Edta
4− ligand following the 2N + 4O pattern and by two O atoms of the neighboring ligands, which affords the formation of zigzag
chains. The Sr(2) atom forms bonds with O atoms of five water molecules and attaches itself to a chain via bonds with three
O atoms of the Edta
4− ligands. The Sr(1)-O and Sr(2)-O bond lengths fall in the ranges 2.520(2)–2.656(3) and 2.527(3)–2.683(2) ?, respectively.
The Sr(1)-N bonds are 2.702(3) and 2.743(3) ? long. In II and III, the H2
Edta
2− anions have a centrosymmetric structure with the trans configuration of the planar ethylenediamine fragment. The N atoms are blocked by acid protons. In II, the environment of the Sr atom is formed by six O atoms of three H2
Edta ligands, two O atoms of water molecules, and an O atom of the bicarbonate ion, which is disordered over two positions. In
III, the environment of the Sr atom includes six O atoms of four H2
Edta
2− ligands and three O atoms of water molecules. The coordination number of the Sr atoms is equal to 8 + 1. In II and III, the main bonds fall in the ranges 2.534(3)–2.732(2) and 2.482(2)–2.746(3) ?, whereas the ninth bond is elongated to 2.937(3)
and 3.055(3) ?, respectively. In II, all the structural elements are linked into wavy layers. The O-H…O interactions contribute to the stabilization of the layer
and link neighboring layers. In III, hydrated Sr2+ cations and H2
Edta
– anions form a three-dimensional [Sr2(H2
Edta)(H2O)3]
n
2n+ framework. The Cl− anions are fixed in channels of the framework by hydrogen bonds with four water molecules. In II and III, the N-H groups form four-center N-H…O3 hydrogen bonds, which include one intermolecular and two intramolecular components. PACS numbers: 61.66.Hq
Original Russian Text ? I.N. Polyakova, A.L. Poznyak, V.S. Sergienko, 2009, published in Kristallografiya, 2009, Vol. 54,
No. 2, pp. 262–267. 相似文献
6.
Shishir Ghosh Faruque Ahmed G. M. Golzar Hossain Daniel T. Haworth Shariff E. Kabir 《Journal of chemical crystallography》2009,39(10):702-707
Abstract Treatment of [Re2(CO)8(MeCN)2] with excess 1-vinylimidazole in refluxing benzene gives three new compounds [Re2(CO)9{η
1-NC3H3N(CH=CH2)}] (1), [Re2(CO)8{η
1-NC3H3N(CH=CH2)}2] (2) and [ReCl2(CO)2{η
1-NC3H3N(CH=CH2)}2] (3) in 11, 32 and 2% yields, respectively. The solid-state structures of complexes 2 and 3 have been determined by single crystal X-ray diffraction studies. Compound 2 crystallizes in the monoclinic space group C2/c, with lattice parameters a = 13.8378(5) ?, b = 11.8909(5) ?, c = 14.4591(6) ?, β = 116.6470(10)°, Z = 4 and V = 2131.99(15) ?3. Compound 3 crystallizes in the monoclinic space group C2/c, with lattice parameters a = 10.1028(3) ?, b = 13.5640(5) ?, c = 12.5398(4) ?, β = 109.637(2)°, Z = 4 and V = 1618.4(9) ?3. The disubstituted dinuclear compound 2 contains two 1-vinylimidazole ligands coordinated through the imino nitrogen atoms at the equatorial sites, whereas the mononuclear
compound 3 contains two carbonyl ligands, two N coordinated η
1-1-vinylimidazole ligands and two terminal Cl ligands.
Graphical Abstract Two dinuclear complesxes [Re2(CO)9{η
1-NC3H3N(CH=CH2)}] (1) and [Re2(CO)8{η
1-NC3H3N(CH=CH2)}2] (2) and the mononuclear [ReCl2(CO)2{η
1-NC3H3N(CH=CH2)}2] (3) were obtained from the reaction of [Re2(CO)8(MeCN)2] with excess 1-vinylimidazole at 80 °C. The X-ray structrures of 2 and 3 are described.
相似文献
7.
L. S. Smirnov K. Wozniak P. Dominiak A. Loose I. Natkaniec M. V. Frontasyeva E. V. Pomyakushina A. I. Baranov V. V. Dolbinina 《Crystallography Reports》2008,53(3):418-427
The crystal structure of a mixed [Rb0.11(NH4)0.89]3H(SO4)2 crystal was refined using single-crystal X-ray and neutron diffraction at 300 K. The refinement confirmed that the phase
II of the crystal belongs to the monoclinic crystal system (space group C2/c). It was shown that, according to the single-crystal neutron diffraction data, ammonium ions can be represented as regular
tetrahedra. The analysis of the constructed difference Fourier maps of the electron and nuclear densities of ammonium ions
revealed the presence of additional peaks, which can indicate the dynamic disorder of ammonium ions in the phase II. The results
obtained con-firmed that the phase transition to the orientational-glass state can occur in the mixed [Rb0.11(NH4)0.89]3H(SO4)2 crystal with a decrease in the temperature.
Original Russian Text ? L.S. Smirnov, K. Wozniak, P. Dominiak, A. Loose, I. Natkaniec, M.V. Frontasyeva, E.V. Pomyakushina,
A.I. Baranov, V.V. Dolbinina, 2008, published in Kristallografiya, 2008, Vol. 53, No. 3, pp. 450–459. 相似文献
8.
L. B. Serezhkina M. S. Grigor’ev I. S. Kuz’menko V. N. Serezhkin 《Crystallography Reports》2012,57(2):258-263
Compounds K2[UO2(C3H2O4)2] · H2O (I) and Rb2[UO2(C3H2O4)2] · H2O (II) are synthesized and their crystal structures are determined by X-ray diffraction. The compounds crystallize in the monoclinic
crystal system; for I, a = 7.1700(2) ?, b =12.3061(3) ?, c = 14.3080(4) ?, β = 95.831(2)°, space group P21/n, Z = 4, and R = 0.0275; for II, a = 7.1197(2) ?, b = 12.6433(4) ?, c = 14.6729(6) ?, β = 96.353(2)°, space group P21/n, Z = 4, and R = 0.0328. It is found that I and II are isostructural. The main structural units of the crystals are the [UO2(C3H2O4)2]2− chains, which belong to the AT
11
B
01 (A = UO22+, T
11, and B
01 = C3H2O42−) crystal chemical group of uranyl complexes. The chains and alkali metal ions R (R = K or Rb) are connected by electrostatic interactions and hydrogen bonds. Some specific structural features of [UO2(C3H2O4)2]2− complex groups are discussed. 相似文献
9.
O. V. Kovalchukova A. I. Stash S. B. Strashnova E. P. Romashkina B. E. Za?tsev 《Crystallography Reports》2010,55(3):428-431
The complex compounds (H3
L · Cl)[CoCl4] (I) and H2
L[CuBr4] (II), where L is 2,4,6-tri(N,N-dimethylamino)methylphenol, were isolated in the crystalline state and studied by X-ray diffraction. The organic cations
were found to be outer-sphere ligands. All three nitrogen atoms of the tertiary amino groups are protonated. In compound I, the H3
L
3+ cation exists as the cis tautomer. In compound II, the H2
L
2+ dication exists as the trans isomer. In the crystal structure, the dications are arranged in layers via hydrogen bonds. 相似文献
10.
R. Alan Howie Edward R. T. Tiekink James L. Wardell Solange M. S. V. Wardell 《Journal of chemical crystallography》2009,39(4):293-298
Abstract The central mercury atom in Hg[S2CN(CH2CH2OH)2]2 is asymmetrically chelated by two dithiocarbamate ligands leading to a distorted square planar geometry. Molecules aggregate
into supramolecular chains via Hg···S interactions that are connected into a three dimensional array by extensive hydrogen
bonding interactions. The compound crystallizes in the orthorhombic space group Pna21 with a = 13.8173(7) ?, b = 4.5307(1) ?, c = 26.0261(12) ?, and Z = 4.
Index Abstract Molecules associate into supramolecular chains via Hg···S interactions and these are connected into a three dimensional architecture
by O–H···O hydrogen-bonding interactions.
相似文献
11.
Abstract
Hydrazinium complexes of Ce(III) and Eu(III) ethylenediaminetetra-acetate hydrates have been synthesized in aqueous solution and characterized by hydrazine and metal analyses, elemental analysis, infrared spectra, X-ray power diffraction and single crystal X-ray diffraction techniques. The CeIIIN2O7 parts in the complex anion has a pseudomono-capped square antiprismatic nine-coordinate structure, in which the six coordinated atoms (two N and four O) from the ethylenediaminetetraacetate ion and three water molecules are coordinated to the central rare earth metal ion directly. The EuIIIN2O7 part in the complex anion has the same structure as CeIIIN2O7 part. The crystal of the cerium complex belongs to the orthorhombic crystal system and Fdd2 space group. The crystal data are the follows: a = 19.7281(7) ?, b = 35.7790(11) ?, c = 12.3244(4) ?, α = β =γ = 90°, V = 8699.2(5) ?3. The final R and Rw are 0.020 and 0.0589 for with I > 2σ (I) and 3,842 reflections, respectively. The crystal of the europium complex is isostructural with the cerium complex. The crystal data of europium complex are: a = 19.7281(7) ?, b = 35.7790(11) ?, c = 12.3244(4) ?, α = β =γ = 90°, V = 8699.2(5) ?3. The final R and Rw are 0.0252 and 0.687 for with I > 2σ (I) and 3,842 reflections, respectively. The X-ray powder diffraction patterns and infrared spectra of the complex are super imposable indicating their structural similarity. 相似文献12.
L. B. Serezhkina E. V. Peresypkina A. V. Virovets A. G. Verevkin D. V. Pushkin 《Crystallography Reports》2009,54(2):259-266
Single crystals of the compounds (C3N6 H7)4(CN3H6)2[UO2(CrO4)4] · 4H2O (I) and (H3O)6[UO2(CrO4)4] (II) are synthesized, and their structures are investigated using X-ray diffraction. Compound I crystallizes in the triclinic system with the unit cell parameters a = 6.3951(8) ?, b = 10.8187(16) ?, c = 16.9709(18) ?, α = 93.674(4)°, β = 97.127(4)°, γ = 92.020(4)°, space group, P
Z = 1, V = 1161.6(3) ?3, and R = 0.0470. Crystals of compound II belong to the monoclinic system with the unit cell parameters a = 14.3158(4) ?, b = 11.7477(3) ?, c = 13.1351(4) ?, β= 105.836(1)°, space group C2/c, Z = 4, V = 2125.2(1) ?3, and R = 0.0213. The uranium-containing structural units of crystals I and II are mononuclear anionic complexes of the composition [UO2(CrO4)4]6− with an island structure, which belong to the crystal-chemical group Am
14 (A = UO2+2, M
1 = CrO2−4) of the uranyl complexes. The [UO2(CrO4)4]6− anionic complexes are joined into a three-dimensional framework through the electrostatic interactions with outer-sphere
cations and a system of hydrogen bonds.
Original Russian Text ? L.B. Serezhkina, E.V. Peresypkina, A.V. Virovets, A.G. Verevkin, D.V. Pushkin, 2009, published in
Kristallografiya, 2009, Vol. 54, No. 2, pp. 284–290. 相似文献
13.
Z. A. Carlson Bronwyn L. Harrod Daniel Widener William A. Howard Keliang Pang 《Journal of chemical crystallography》2010,40(10):863-866
Abstract
[Zn(H2O)6][{Zn(H2O)}2(ttha)]·4H2O (ttha = triethylenetetraamine-N,N,N′,N″,N‴,N‴-hexaacetate) has been structurally characterized (triclinic, P-1, a = 7.4014(4) ?, b = 8.5521(4) ?, c = 15.0309(7) ?, α = 73.582(1)°, β = 85.173(1)°, γ = 69.935(1)°; V = 857.15(7) ?3; Z = 1). The two Zn2+ ions bound by the [ttha]−6 ligand are in distorted octahedral environments. While there exists a center of symmetry in the [{Zn(H2O)}2(ttha)]2− anion in the crystalline state, 13C{1H} NMR spectroscopy demonstrates the absence of a center of symmetry in aqueous solution. Furthermore, electronic absorption spectroscopy reveals that [Zn(H2O)6][{Zn(H2O)}2(ttha)]·4H2O reacts with vanadyl(IV) acetate in aqueous solution at room temperature to yield [(VO)2(ttha)]2−. This reaction implies that Zn2+ can dissociate from [{Zn(H2O)}2(ttha)]2− in aqueous solution. 相似文献14.
Jing-Ping Wang Yue Shen Dong-Qin Bi Jing-Yang Niu 《Journal of chemical crystallography》2009,39(4):251-255
Abstract A novel dimeric compound H3.5[Ni(2,2′-bipy)3]3{[AlW12O40Ni(2,2′-bipy)2(H2O)]2Na0.5} prepared by the hydrothermal method consists of a {[AlW12O40Ni(2,2′-bipy)2(H2O)]2Na0.5}9.5− heteropolyanion, and in the anion, two reduced Keggin heteropolyanions [AlWVI
10W2VO40]7− are bridged via Na coordination ion by means of an O–Na1–O linkage (O atoms from the surface bridging oxygen atoms of [AlWVI
10W2VO40]7−) and two Ni coordination ions are linked to the Na1 square planar moiety by making use of Ni–Ow–Na1–Ow–Ni bridges. The crystal
belongs to the monoclinic-space group C2/c, a = 46.592(9), b = 14.306(3), c = 25.967(5) ?, β = 90.14(3)°, V = 17308(6) ?3, Z = 4, D
c
= 3.116 Mg/m3.
Index Abstract A novel dimeric compound H3.5[Ni(2,2′-bipy)3]3{[AlW12O40Ni(2,2′-bipy)2(H2O)]2Na0.5} prepared by the hydrothermal method consists of a {[AlW12O40Ni(2,2′-bipy)2(H2O)]2Na0.5}9.5− heteropolyanion, and in the anion, two reduced Keggin heterpolyanions [AlWVI
10WV
2O40]7− are bridged via Na coordination ion by means of an O–Na1–O linkage (O atoms from the surface bridging oxygen atoms of [AlWVI
10WV
2O40]7−) and two Ni coordination ions are linked to the Na1 square planar moiety by making use of Ni7–Ow7–Na17–Ow7–Ni bridges.
相似文献
15.
[NH3(CH2)3NH3]2[Ni(HP2O7)2(H2O)2] 4H2O (NiDAP) is a new diphosphate of transition metallic and organic cations obtained from a mixture of H4P2O7, 2NiCO3 Ni(OH)2 4H2O and NH2(CH2)3NH2 in a 1:1/6:1 molar ratio. This mixed organo-mineral compound crystallizes in the triclinic system, P¯, with the unit cell dimensions: a = 7.3678(3)~Å, b = 7.8018(5)Å, c = 11.1958(7)Å, = 76.914(4), = 81.052(4), = 85.46(1), V = 618.57(6)Å3 and Z = 1. The crystal structure of NiDAP consists of a complex anion, [Ni(HP2O7)2(H2O)2]4– and a diammoniumpropane cation. The complex anion is built up from two neutral water molecules (OW1) and two diphosphosphoric anions coordinated to Ni(II) in a bidentate chelating manner. (OW1) molecules link anionic complexes, [Ni(HP2O7)2(H2O)2]4– to create a thick bidimensional layers parallel to the (a, b) plane. These layers are interconnected in three dimensions through hydrogen bonds established between organic cations, the remaining water molecules OW2, OW3, and some external oxygen atoms of the anionic complex arrays. NiDAP was also characterized by IR spectroscopy, TG-DTA, and DSC analyses. 相似文献
16.
L. B. Serezhkina A. V. Vologzhanina N. A. Neklyudova V. N. Serezhkin 《Crystallography Reports》2009,54(1):59-62
Single crystals of the compound {NH2(C2H5)2}2[(UO2)2C2O4(CH3COO)4] · 2H2O (I) are synthesized, and their structure is investigated using X-ray diffraction. Compound I crystallizes in the monoclinic system with the unit cell parameters a = 9.210(2) ?, b = 14.321(3) ?, c = 12.659(3) ?, β = 105.465(13)°, V = 1609.2(6) ?3, space group P21/c, Z = 2, and R = 0.0198. The structural units of crystals I are binuclear groups of the composition [(UO2)2C2O4(CH3COO)4]2− with an island structure, which belong to the crystal-chemical group A
2
K
02
B
401 (A = UO22+, K
02 = C2O42−, B
01 = CH3COO−) of the uranyl complexes, diethylammonium cations, and water molecules. The uranium-containing groups are joined into a three-dimensional
framework through electrostatic interactions with diethylammonium cations and a system of hydrogen bonds, which are formed
with the participation of the atoms involved in the composition of the water molecules, oxalate ions, acetate ions, and diethylammonium
cations.
Original Russian Text ? L.B. Serezhkina, A.V. Vologzhanina, N.A. Neklyudova, V.N. Serezhkin, 2009, published in Kristallografiya,
2009, Vol. 54, No. 1, pp. 65–67. 相似文献
17.
Chao-Yan Zhang Qian Gao Ya-Bo Xie Jian-Bo Feng 《Journal of chemical crystallography》2008,38(10):749-753
Abstract The reaction of the dithioether ligand, 2,3-bis(pyrimidine-2-thiomethyl)quinoxaline (L) with AgNO3, leads to the formation of a novel complex {[Ag5(L)2(NO3)4](NO3)(CHCl3)2}n 1, which has been characterized by single-crystal X-ray diffraction analysis: monoclinic, space group C2/c, with a = 34.741(7), b = 9.930(2), c = 17.004(4) ?, β = 106.497(6)° and V = 5625(2) ?3.Complex 1 consists of 2D {[Ag5(L)2(NO3)4]+}n cations, uncoordinated
anions and CHCl3 solvent molecules. In 1, there exist three crystallographic independent AgI centers, which adopt different coordination geometries. There exist π–π stacking interactions in the complex and these weak interactions further stabilize the crystal structure in the solid state.
The coordination feature of the ligand has been investigated by DFT calculations.
Index Abstract Synthesis and Structure of a Silver(I) Complex {[Ag5(L)2(NO3)4](NO3)(CHCl3)2}n [L = 2,3-bis(pyrimidine-2-thiomethyl)quinoxaline]
Chao-Yan Zhang, Qian Gao, Ya-Bo Xie*, and Jian-Bo Feng
The crystal structure of complex {[Ag5(L)2(NO3)4](NO3)(CHCl3)2}n (L = 2,3-bis(pyrimidine-2-thiomethyl)quinoxaline) consists of 2D {[Ag5(L)2(NO3)4]+}n cations, uncoordinated anions and CHCl3 solvent molecules. There exist three crystallographic independent AgI centers, which adopt different coordination geometries. The coordination feature of the ligand has been investigated by DFT
calculations.
相似文献
18.
Savariapichai Martin Chandran Revathi Arunachalam Dayalan 《Journal of chemical crystallography》2009,39(12):908-912
Abstract
The title complex: C4H12N2[Co(C4H7N2O2)2Cl2]2·2H2O, viz., PpH2[Co(dmgH)2Cl2]2·2H2O, where, dmgH− = dimethylglyoximate and Pp = piperazine was synthesized and analyzed by single crystal XRD studies. The complex was grown as brown crystals by the slow evaporation method in ethanol. The complex crystallizes as triclinic with the space group p[`1] p\overline{1} and unit cell parameters a = 8.4521 (10) Å, b = 10.0999 (11) Å, c = 10.8952(13) Å; α = 94.066(6)°, β = 106.047(6)° and γ = 100.901(6)°. There are two complex molecules present in the unit cell. The short intra molecular O–H···O hydrogen bonds link the glyoximate moieties in the crystal. 相似文献19.
Abstract The mononuclear complex [Na(C7H6O4)(H2O)3](C7H5O4) · 2H2O has been synthesized and characterized by IR, single crystal X-ray and thermal analysis. The compound crystallizes in the
monoclinic space group P21 with a = 3.623(2) ?, b = 15.872(6) ?, c = 15.650(5) ?, β = 93.13(4)°, V = 896.6(7) ?3 and Z = 2. The central sodium ion is six coordinated with distorted octahedral geometry by two oxygen atoms from two bridging 3,5-dihydroxybenzoate
ligands and four ones from different water molecules. The notable feature of the title complex is the formation of a three-dimensional
network, through the combination of coordination bonds, hydrogen bonds and π···π interactions. There are one-dimensional channels
in the structure, filled in by water molecules. The compound dehydrates in the temperature range of 70–125 °C and then is
stable up to 230 °C.
Index Abstract The mononuclear complex [Na(C7H6O4)(H2O)3](C7H5O4) · 2H2O has been synthesized and characterized by IR, single crystal X-ray and thermal analysis.
相似文献