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1.
Wei Xiong Yan Su Zhong Zhang Zilu Chen Fupei Liang Lixia Wang 《Journal of chemical crystallography》2011,41(10):1510-1514
Abstract
The reactions of a new compound of N-Carboxyphenylenesulfonyl-S-Carboxymethyl-l-Cysteine (Cs-cmc) with Zn(II) or Co(II) salts in the presence of 4,4′-bipyridine (4,4′-bipy) led to the decomposition of Cs-cmc and produced [Zn(4,4′-bipy)(H2O)4]X2 (X = p-sulfamoylbenzoate) 1 and [Co(4,4′-bipy)(H2O)4]Y·H2O (Y = p-sulfonatobenzoate) 2, in which the decomposition products of Cs-cmc exist as free counter-anions. The single crystal X-ray diffraction analyses revealed that compound 1 crystallizes in monoclinic C2/c space group with a = 18.748(4) ?, b = 11.520(2) ?, c = 12.751(3) ?, β = 90.290(4)°, V = 2753.9(10) ?, Z = 4 and compound 2 crystallizes in orthorhombic Pca21 space group with a = 12.114(3) ?, b = 11.369(2) ?, c = 14.770(3) ?, V = 2034.1(7) ?, Z = 4. It was revealed that 1D chains were constructed from metal ions and 4,4′-bipy in both compounds. The 1D chains interact with the counter-anions by hydrogen bonds, forming 3D supramolecular structures. 相似文献2.
Branson A. Maynard Philip A. Smith Ayesha Jaleel LeAnn Ladner Richard E. Sykora 《Journal of chemical crystallography》2010,40(7):616-623
Abstract
The synthesis of four different lanthanide tetracyanoplatinates all incorporating 2,2′:6′,2″-terpyridine have been carried out in acetonitrile/water mixtures by reaction of an appropriate Ln3+ salt with 2,2′:6′,2″-terpyridine and potassium tetracyanoplatinate. The use of different Ln3+ salts as reactants results in the isolation of {La(tpy)(H2O)3}2[Pt(CN)4]3·2CH3CN·2H2O (La-1) space group P[`1] P\bar{1} , a = 9.3862(15) ?, b = 12.186(1) ?, c = 13.493(1) ?, α = 88.082(7)°, β = 80.22(1)°, γ = 74.88(1)°, {Pr(tpy)(H2O)3}2[Pt(CN)4]3·2H2O (Pr-2) space group P[`1] P\bar{1} , a = 9.2458(15) ?, b = 10.8068(9) ?, c = 13.6178(14) ?, α = 84.554(8)°, β = 74.905(10)°, γ = 79.490(9)°, Ho(tpy)(H2O)2(NO3)[Pt(CN)4] · CH3CN (Ho-3) space group P21/c, a = 12.867(1) ?, b = 15.1046(15) ?, c = 13.651(4) ?, β = 105.39(1)°, or Yb(tpy)(H2O)2(NO3)[Pt(CN)4]·0.5CH3CN·1.5H2O (Yb-4) space group Pbcn, a = 13.226(7) ?, b = 15.870(2) ?, c = 24.276(3) ? under quite similar reaction conditions. All four of these compounds have been isolated as single crystals and X-ray diffraction has been used to investigate their structural features. None of these compounds are isostructural with one another, but all contain one-dimensional, polymeric structures that contain tris chelation of the Ln3+ cations by terpyridine and bridging of the Ln3+ ions by tetracyanoplatinate. La-1 and Pr-2 contain both cis- and trans-bridging of Ln3+ cations by tetracyanoplatinate resulting in double chains with a ladder-type structure. Ho-3 and Yb-4 are similar in that they contain chelation of Ln3+ by both terpyridine and a nitrate anion and both structure types only contain cis-bridging by tetracyanoplatinate. All four structures contain Pt–Pt interactions in the form of dimeric units. 相似文献3.
Abstract
A new ternary complex [Cd(sfdb)(3-pytpy)]2·2H2O (H2sfdb = 4,4′-Sulfonyldibenzoic acid, 3-pytpy = 4′-(3-pyridyl)-2,2′:6′,2″-terpyridine) 1 has been hydrothermally synthesized and characterized by the elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 (C34H24CdN4O7S) crystallizes in triclinic space group P-1, features an interesting 1D channel-containing supramolecular structure constructed from grid-like dimers via π–π stacking interactions. Unit cell parameters for 1: a = 8.866(2) ?, b = 11.083(3) ?, c = 15.790(4) ?, α = 103.612(4)°, β = 95.044(3)°, γ = 101.083(4)° and Z = 2. The luminescent spectrum shows the emission peak of complex 1 is at 392 nm which is attributed to the intraligand transition. 相似文献4.
Yan-Hua Liu Ling-Fei Zeng Pei-Qi Qiao Yun-Tao Shi Xin Liu Wen Gu 《Journal of chemical crystallography》2011,41(9):1406-1410
Abstract
Two compounds [Zn(Hdpa)2(2,2′-bipy)]2 (1) and [Mn(dpa)(4,4′-bipy)] n (2) (H2dpa=2,2′-biphenyldicarboxylate, bipy=dipyridine) are synthesized by hydrothermal reactions and structurally characterized by Single crystal X-ray diffraction analyses. Compound 1 is a dual-core molecular structure of two Zn ions in the same coordination environment, we studied the fluorescence of compound 1. Compound 2 is a layer structure based on the one-dimensional chains bridged by 4,4-bipy, it displays weak antiferromagnetic interactions between the inter-chain Mn2+ ions. 相似文献5.
Abstract A novel aromatic polycarboxylate polymer, [Zn2(bipy)2(btec)(H2O)2]n (1), has been synthesized and structurally characterized by the single crystal X-ray diffraction. Compound 1 belongs to the triclinic crystal system, space group P-1; a = 7.7449(6) ?, b = 8.9286(8) ?, c = 10.7422(8) ?, α = 80.95(1)°, β = 70.21(1)°, γ = 78.14(1)°, V = 680.93(10) ?3, Z = 2. The coordination geometry of Zn(II) atom is distorted trigonal bipyramidal with two nitrogen atoms of one 2,2′-bipy
group, two oxygen atoms from two different btec ligands, and one water. The 16-membered rings are alternately arranged forming
an infinite 1-D double-chain structure. A 3-D network was constructed by interlayer C···H–O, O···H–O hydrogen bonds and π–π
stacking interactions. Compound 1 exhibits fluorescence at room temperature in the solid state.
Graphical Abstract A 1-D double-chain aromatic polycarboxylate polymer, [Zn2(bipy)2(btec)(H2O)2]n (1), has been synthesized and structurally characterized by the single crystal X-ray diffraction. A 3-D network was constructed
by intermolecular C···H–O, O···H–O hydrogen bonds and π–π stacking interactions. Compound 1 exhibits fluorescence at room temperature in the solid state.
相似文献
6.
Abstract
Assembly of orotic acid (2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid, H3dtpc) and Cd(OAc)2·2H2O gave rise to two complexes [Cd2(H2dtpc)2(H2O)6] (I) and [Cd(H2dtpc)(bpy)(H2O)]n (II) (bpy = 2,2′-bipyridine). Complex (I) and (II) have been characterized by X-ray single crystal diffraction, IR, PXRD, TGA and fluorescence spectra. Structural analyses reveal that (I) is a binuclear structure, and complex (II) possesses a one-dimensional infinite zig-zag chain architecture and the chains are further assembled into 2D supramolecular network by strong hydrogen bonding interactions. Crystal data for (I): Monoclinic, space group P2(1)/n, a = 9.3221(19) ?, b = 6.6315(13) ?, c = 15.322(3) ?, β = 102.31(3)°, V = 925.4(3) ?3, Z = 4, R1 = 0.0269, and wR2 = 0.0604; for (II): Monoclinic, space group P2(1)/c, a = 9.9880(2) ?, b = 14.5085(2) ?, c = 11.6957(2) ?, β = 107.976(2)°, V = 1612.10(5) ?3, Z = 4, R1 = 0.0234 and wR2 = 0.0554. 相似文献7.
Milorad Stojanovic Nicholas J. Robinson Tu Ngo Richard E. Sykora 《Journal of chemical crystallography》2011,41(10):1425-1432
Abstract
Three novel compounds have been synthesized and structurally characterized: [1,10-Hphen]2Pt(CN)4·2H2O (1a) space group P21/n, a = 8.73070(17) ?, b = 15.4609(2) ?, c = 9.82661(19) ?, β = 103.252(2)°; [2,2′-Hbipy]2Pt(CN)4·2H2O (1b) space group P21/n, a = 7.0859(14) ?, b = 12.940(2) ?, c = 13.7486(19) ?, β = 100.708(16)°; K2[Pt(CN)4]·2phen (phen = 1,10-phenanthroline) (2) space group P21/c, a = 8.1393(4) ?, b = 20.4050(9) ?, c = 8.4085(4) ?, β = 105.284°. All three structures contain isolated [Pt(CN)4]2− ions and they all illustrate the absence of Pt⋯Pt interactions due to the presence of bulky cyclic amines or ammoniums. The structures of 1a and 1b contain large organic cations, 2,2′-bipyridinium and 1,10-phenanthrolinium, respectively while compound 2 contains neutral 1,10-phenanthroline molecules co-crystallized between the potassium tetracyanoplatinate framework. 相似文献8.
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
9.
Abstract
The title compounds, C10H8N2·C15H16O2 (1) and C10H8N2·C14H10O5 (2), were synthesized by 4,4′-bipyridyl and two similar V-shaped molecules. The two complexes both crystallized in the same space group P21/n with the crystal cell parameters: a = 16.0536(3) ?, b = 6.42730(1) ?, c = 21.2717(4) ?, β = 102.330°, V = 2144.21(7) ?3, Z = 4 in compound 1 and a = 7.45020(10) ?, b = 10.0784(2) ?, c = 26.9430(5) ?, β = 92.1140(10)°, V = 2021.67(6) ?3, Z = 4 in compound 2. Compound 1 forms regular molecular chains containing alternative 4,4′-bipyridyl and 4,4′-isopropylidenediphenol units; the molecular components are linked by two types of O–H···N hydrogen bonds. Additionally, every two neighboring chains are connected to be a ladder structure by means of weak C–H···O interactions. In compound 2, 4,4′-bipyridyl and 4,4′-oxydibenzoic acid first construct one-dimensional architecture by strong O–H···N hydrogen bonds, which are similar with the interactions in compound 1. Secondly, two types of weak C–H···O contacts formed between 4,4′-bipyridyl and the acid link one-dimensional chains to be interlaced three-dimensional hydrogen-bonded networks. 相似文献10.
Jinling Li Ziwei Gao Caiyun Zhang Lingxiang Gao 《Journal of chemical crystallography》2009,39(9):623-631
Abstract Based on the reaction between Cp2TiCl2 and substituted salicylic acids in the presence of β-cyclodextrin polymer (β-CDP), three four-coordinated titanocene complexes
[(η5-C5H5)2Ti(S,O′)(OCC6H4)·(C6H6)0.5] (1), [(η5-C5H5)2Ti{(O,O′)(3,5-Cl2-OCC6H2)}] (2) and [(η5-C5H5)2Ti{(O,O′)(3,5-(NO2)2-OCC6H2)}] (3) were synthesized in high yields and their crystal structures have been determined by single-crystal X-ray diffraction. The
structure of 1 has a Monoclinic space group P21/c with a = 8.313(3) ?, b = 9.960(4) ?, c = 22.330(8) ?, β = 111.856(11)° and Z = 4. The structure of 2 has a Monoclinic space group P21/c with a = 8.0577(13) ?, b = 8.9022(14) ?, c = 21.977(4) ?, β = 96.298(3)° and Z = 4. The structure of 3 has a Triclinic space group P-1 with a = 8.1687(11) ?, b = 8.3027(11) ?, c = 12.7164(17) ?, α = 102.930(2)°, β = 100.479(2)°, γ = 95.458(2)° and Z = 2. Each of the complexes exhibits a three-dimensional framework constructed through weak interactions, which are hydrogen
bonding, π–π stacking and C–H···π interactions. It was found that the variation of the substituted salicylate ligands affect
the weak interactions as well as the specific framework structure that forms.
Graphical Abstract Three four-coordinated titanocene complexes [(η5-C5H5)2Ti(S,O′)(OCC6H4)·(C6H6)0.5] (1), [(η5-C5H5)2Ti{(O,O′)(3,5-Cl2-OCC6H2)}] (2) and [(η5-C5H5)2Ti{(O,O′)(3,5-(NO2)2-OCC6H2)}] (3) were synthesized in high yields, each of the complexes exhibits a three-dimensional framework constructed through weak interactions.
It was found that simple variation of the substituted salicylate ligands affect the weak interactions as well as the specific
framework structure that forms.
. 相似文献
11.
Clyde R. Metz John D. Knight Anna C. Dawsey William T. Pennington Donald G. VanDerveer Jordan B. Brown Kevin J. Bigham Charles F. Beam 《Journal of chemical crystallography》2010,40(4):296-301
Abstract
Dilithiated C(α), N-carbomethoxyhydrazones were condensed with lithiated methyl 2-(aminosulfonyl)benzoate to afford intermediates that were isolated and not characterized but cyclized with acetic anhydride, which also resulted in N-acetylation. The X-ray crystal structure determinations of methyl 2-acetyl-5′-phenyl-2H-spiro[benzo[d]isothiazole-3,3′-pyrazole]-1,1-dioxide-2′(4′H)-carboxylate and methyl 2-acetyl-5′-(2-thienyl)-2H-spiro[benzo[d]isothiazole-3,3′-pyrazole]-1,1-dioxide-2′(4′H)-carboxylate products were a follow up for absorption spectra, and they confirmed their structures. Mechanistic intermediates to describe the reaction may include C-acylated intermediates that cyclize to spiro(N-benzoisothiazole dioxide-pyrazole) instead of N-carbomethoxypyrazole-ortho-benzenesulfonamides. Crystals of C19H17N3O5S 7 are monoclinic, P21/c, a = 11.899(2) ?, b = 17.562(4) ?, c = 9.484(2) ?, β = 111.03(3)°, Z = 4, V = 1849.9(6) ?3, R 1 = 0.0857 and wR 2 = 0.2216 for reflections with I > 2σ(I); crystals of C17H15N3O5S2 8 are orthorhombic, Pbca, a = 16.045(3) ?, b = 10.746(2) ?, c = 20.389(4) ?, Z = 8, V = 3516(1) ?3, R 1 = 0.0841 and wR 2 = 0.2179 for all reflections with I > 2σ(I). 相似文献12.
Abstract
In this paper, three new metal-organic frameworks, synthesized by hydrothermal technique, are described. The compounds crystallize in triclinic space group P − 1 with cell parameters, respectively equal to (1) [La(H2O)3(dipic)]2(C2O4) · 2H2O a = 7.9990(1) ?, b = 8.3380(4) ?, c = 9.6180(5) ?, α = 98.194(5)°, β = 100.438(3)°, γ = 102.437(3)°, (2) [Eu(H2O)2(C2O4)]2(dipic) · 3H2O a = 8.2170(6) ?, b = 10.5900(8) ?, c = 13.0670(3) ?, α = 93.951(3)°, β = 103.393(5)°, γ = 107.797(6)°, and (3) [Ce3(dipic)3(Hdipic)(SO4)(H2O)3] · 4H2O a = 11.655(1) ?, b = 12.886(1) ?, c = 16.139(2) ?, α = 106.369(8)°, β = 92.90(1)°, γ = 115.787(7)°. They differ by their dimensionality mono-dimensional for (1), tri-dimensional for (2) and bi-dimensional for (3). 相似文献13.
Ilia A. Guzei Howard E. Zimmerman Sergey Shorunov Lara C. Spencer 《Journal of chemical crystallography》2009,39(6):399-406
Abstract 2,3-Diphenyl-1-naphthol (1) undergoes two unexpected reactions under different conditions. Compound (1) was heated in DMSO-d6 and underwent a Pummerer type thermal reaction to give two isomeric products, 1-(methylthio)methoxy-2,3-diphenyl naphthol-d5 which crystallized in the space group with a = 7.1610(9) ?, b = 11.2795(15) ?, c = 12.8905(17) ?, α = 114.049(2)°, β = 96.589(2)°, and γ = 102.945(2)°, and 2-(methylthio)methyl-2,3-diphenyl 1(2H)-naphthalenone-d5 which crystallized in the space group with a = 8.5981(5) ?, b = 10.4374(6) ?, c = 11.1078(6) ?, α = 78.748(2)°, β = 67.709(2)°, and γ = 83.184(2)°. Photolysis (254 nm) of (1) resulted in 2,2′,3,3′-tetraphenyl-1,1′-bi-2-naphthol which crystallized in the space group P21/c with a = 26.3616(11) ?, b = 10.1707(4) ?, c = 23.3376(9) ?, and β = 99.034(2)°.
Graphical Abstract When 2,3-diphenyl-1-naphthol was heated in DMSO-d6 two unexpected isomers, 1-(methylthio)methoxy-2,3-diphenyl naphthol-d5 and the racemate 2-(methylthio)methyl-2,3-diphenyl 1(2H)-naphthalenone-d5 were produced. Photolysis in THF at 254 nm led to the unexpected product 2,2′,3,3′-tetraphenyl-1,1′-bi-2-naphthol. All structures
were elucidated by X-ray crystallography.
相似文献
14.
Augusto Rivera Diego Quiroga Jaime Ríos-Motta Juan Carda Gabriel Peris 《Journal of chemical crystallography》2009,39(11):827-830
Abstract
The crystal structure of new racemic di-Mannich base 2,2′-(3aR,7aR/3aS,7aS)-hexahydro-1H-benzo[d]imidazole-1,3(2H)-diyl)bis(methylene)bis(4-methylphenol) (4), is reported. The structure of the title compound, C23H30N2O2, shows two intramolecular O–H···N hydrogen bonding interactions. This compound crystallizes in triclinic symmetry, in space group P−1, with lattice constants: a = 6.2563(3) ?, b = 12.1743(7) ?, c = 14.7257(7) ?, α = 108.11(1)°, β = 99.77(1)°, γ = 98.78(1), V = 1024.97(9) ?3, Z = 2, F(000) = 396, R 1 = 8.3%, wR 2 = 14.7%. 相似文献15.
Michael G. B. Drew Senjuti De Dipankar Datta 《Journal of chemical crystallography》2008,38(7):495-499
Abstract Reactions of CuF2, CuCl2 · 2H2O and CuBr2 with 2,2′-dipyridylamine (HDPA) in water at room temperature using Cu:HDPA = 2:1 mol yield [Cu(HDPA)(H2O)2F]F · 3H2O (1), Cu(HDPA)Cl2 (2) and Cu(HDPA)Br2 (3) respectively.
The structures of 2 and 3 are isostructural in spacegroup C2 with cell dimensions; for 2, a = 14.702(8), b = 7.726(2), c = 4.829(6) ?, β = 96.68(8)° and for 3, a = 14.2934(8), b = 7.9057(6), c = 5.1982(5) ?, β = 94.049(7)°. In the X-ray crystal structure, the complex 1 is found to contain tapes of water pentamers. Our DFT calculations at the B3LYP/LanL2DZ level show that the reaction Cu(HDPA)X2 + 2H2O = [Cu(HDPA)(H2O)2X]X is most exothermic in the gas phase when X− = F−, i.e., the tendency of water uptake is maximum for Cu(HDPA)F2.
It seems that the exothermicities of the aquations of Cu(HDPA)Cl2 and Cu(HDPA)Br2 are not sufficient to stabilise the type of ribbons of water observed in 1 and consequently water is eschewed when X− = Cl− or Br−.
Graphical Abstract Cu(2,2′-dipyridylamine)X2 takes up water to produce ribbons of water pentamer, as shown in the accompanied picture (red: O atom of a solvent water
molecule), only when X− is F− but not when it Cl− or Br−. The results are rationalised by means of DFT calculations at the B3LYP/LanL2DZ level.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
16.
Tian-hui Hu Xin Zhang Qi Wang Wan-sheng You Cui-ying Huang Yong Fang 《Journal of chemical crystallography》2011,41(1):64-68
Abstract
Two new metal complexes supported by {VO3}n n− chains, [M(dpa)V2O6] (1, M = Zn2+; 2·H2O, M = Cu2+; dpa = 2,2′-dipyridylamine), have been synthesized hydrothermally and characterized by elemental analysis, TG analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal data: [Zn(dpa)V2O6] 1, Triclinic, P-1, a = 9.663(7) ?, b = 10.617(7) ?, c = 15.114(10) ?, α = 105.678(10)°, β = 104.772(9)°, γ = 94.021(10)°, Z = 2; [Cu(dpa)V2O6]·H2O 2·H2O, Monoclinic, C2, a = 20.543(3) ?, b = 7.2460(9) ?, c = 10.4853(13) ?, β = 111.318(2)°, Z = 4. Complex 1 is constructed from sinusoidal {VO3}n n− chains with {Zn(dpa)}2+ fragments spanning the adjacent troughs and crests into an 1D ribbon-like structure. Complex 2 is built up by linking {VO3}n n− chains via pairs of symmetrical {Cu(dpa)}2+ fragments into a 2D layered structure. The Zn(II) and Cu(II) ions exhibit tetrahedral and square pyramidal coordination environments, respectively. The formation of the two isomers is attributed to the flexibility of {VO3}n n− chains and the different coordination configurations of the two metal ions. There exist significant π–π stacking and hydrogen bonding interactions in complexes 1 and 2. 相似文献17.
Abstract
Solvothermal reaction of Er(NO3)3·6H2O and tri(2-carboxyethyl)isocyanurate (H3tci) in DMF/H2O (DMF = dimethylformamide) medium leads to the generation of one new 3D coordination polymer, [Er(tci)(H2O)] DMF·2H2O (1), which was characterized by the elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 crystallizes in triclinic space group P-1, features an interesting 3D coordination framework constructed from the flexible tridentate ligand H3tci. Unit cell parameters for 1: a = 7.853(2) ?, b = 12.186(3) ?, c = 13.222(2) ?, α = 112.156(14)°, β = 105.457(15)°, γ = 91.541(18)° and Z = 2. 相似文献18.
Abstract
A hexafluorophosphate salt of ruthenium(II) bis(4′-(1H-imidazol-2-yl)-2,2′:6′,2″-terpyridine) complex was synthesized. It crystallizes in the monoclinic space group C21/c with unit cell parameters, a = 18.5878(15) ?, b = 15.9546(11) ?, c = 16.1418(12) ?, β = 106.721(3)°, V = 4584.6(6) ?3 and Z = 4. The bond lengths, bond angles and torsional angles of hexafluorophosphate salt of the [Ru(itpy)2]2+ cation show significant change from the nitrate salt of the same cation. Thermogravimetric analysis and differential scanning calorimetry confirm the loss of solvents of crystallization between 100 and 200 °C. 相似文献19.
Abstract
The title compound (C5Me5)2Th[-N=C(Ph)(tpy)]2 (1) (Ph=C6H5, tpy=2,2′:6′,2″-terpyridine) was synthesized and characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. This system represents the first example of an actinide complex featuring ketimide ligands with both a phenyl group and a terpyridyl group. The complex crystallizes in the monoclinic space group P21/c with unit cell parameters a = 10.7037(6) ?, b = 32.0735(16) ?, c = 34.6506(18) ?, β = 90.127(3)°, V = 11895.7(11) ?3, Z = 8, D calc = 1.406 Mg/m3. The thorium(IV) complex adopts a pseudo-tetrahedral geometry, with the two ketimide ligands occupying the plane bisecting the metallocene unit. Structural comparisons of the title complex are made with related metallocene thorium(IV) bis(ketimide) derivatives. 相似文献20.
Amal Cherian Kathalikkattil P. S. Subramanian Suresh Eringathodi 《Journal of chemical crystallography》2010,40(12):1087-1093