共查询到20条相似文献，搜索用时 15 毫秒
1.
Manfredo Hrner Gelson Manzoni de Oliveira Mariana Boneberger Behm Herton Fenner 《无机化学与普通化学杂志》2006,632(4):615-618
A solution of deprotonated 1,3‐bis(4‐bromophenyl)triazene reacts with Hg(CH3COO)2 in methanol / tetrahydrofurane to give yellow crystalline needles of {HgII[NNN(PhBr)2]2}n, a triazenide complex polymer of HgII with metal‐η2,η2‐arene π‐interactions, performed by coordinated single triazenide chains. The crystal structure of the new polymeric complex of HgII belongs to the monoclinic space group P21/n. The lattice of [HgII(BrPhNNNPhBr)2]n can be viewed as a one‐dimensional assembling of planar tectons [HgII(BrPhNNNPhBr)2] linked through metalocene alike HgII‐η2,η2‐arene π‐interactions along the crystallographic b axis. 相似文献
2.
Elena Bermejo Alfonso Castieiras Isabel García‐Santos Douglas X. West 《无机化学与普通化学杂志》2005,631(11):2011-2019
The reduction of 2‐cyanopyridine by sodium in dry methanol in the presence of thiosemicarbazide produces 2‐pyridineformamide thiosemicarbazone, HAm4DH. The reactions of the potentially tridentate ligand HAm4DH with salts of Zn, Cd, and Hg gave a variety of metal‐ligand complexes. The complexes were characterized by mass spectrometry as well as IR and multinuclear NMR (1H, 13C, 13C CP/MAS, 113Cd, 199Hg) spectroscopy. The crystal structures of [Zn(Am4DH)(OAc)]2·H2O, [Hg(HAm4DH)2Br2]·C2H5OH and [Hg(μ‐S‐Am4DH)Br] were obtained. Coordination of anionic Am4DH? occurs through the pyridyl nitrogen, imine nitrogen and thiolato sulfur atoms, while the neutral ligands in [Hg(HAm4DH)2Br2] coordinate as monodentate ligands through their thione sulfur atoms. One of the acetate ligands in [Zn(Am4DH)(OAc)]2·H2O is bridging monodentate and the other bridging bidentate. [Hg(μ‐S‐Am4DH)Br] features five‐coordinate mercury centers with bridging thiolato sulfur atoms. The intermolecular arrangement is dictated by hydrogen bonding from the amino groups and by π‐π stacking of the pyridine rings. 相似文献
3.
Leonardo C. Ferreira Carlos A. L. Filgueiras Lorenzo C. Visentin Jairo Bordinho Manfredo Hrner 《无机化学与普通化学杂志》2008,634(11):1896-1900
The preparation and characterization of two novel HgCl2 and Hg(SCN)2 complexes with bis[N‐(2‐tert‐butylphenyl)imine]acenaphthene is here described. One‐pot reaction techniques were used, leading to high yields of 75 % and 81 %, respectively. The complexes were characterized by microanalysis, i.r. and 1HNMR spectroscopy, and by single crystal X‐ray diffraction. The structures of the complexes present similar characteristics, the most outstanding being the formation of dimers via intermolecular interaction. Whereas the HgCl2 complex shows a unidimensional network due to strong π–π interactions, its Hg(SCN)2 counterpart displays a supramolecular arrangement resulting from non classical hydrogen bond formation. 相似文献
4.
Polymeric melaminium sulfate [(LH2)2(SO4)2]n has been synthesized by reaction of melamine L with sulfuric acid in aqueous solution. The compound was characterized by elemental analysis, 1H NMR, ESI MS and a single crystal X‐ray diffraction analysis. The architecture of the assembly formed is based on hydrogen bonded dimers of diprotonated melaminium cations (LH2)2+ which are linked by a hydrogen bonded network with sulfate ions forming 2D sheets. A 3D polymeric structure results from the presence of mutual hydrogen bonds between sulfate ions and melaminium cations in different sheets. Significant π‐π stacking is also present between the aromatic cations in this supramolecular arrangement. 相似文献
5.
Farzin Marandi Babak Mirtamizdoust Ali A. Soudi Veysel T. Yilmaz Canan Kazak 《无机化学与普通化学杂志》2006,632(15):2380-2382
A novel 1D polymeric lead(II) complex containing the first Pb2‐(μ‐N3)2 motif, [Pb(phen)(μ‐N3)(μ‐NO3)]n (phen = 1,10‐phenanthroline), has been synthesized and characterized. The single‐crystal X‐ray data showed the coordination number of Pb2+ ions to be eight (PbN4O4) with the Pb2+ ions having “stereo‐chemically active” electron lone pairs; the coordination sphere is hemidirected. The chains interact with each other via π‐π interactions to create a 3D framework. 相似文献
6.
Leonardo C. Ferreira Carlos A. L. Filgueiras Prof. Dr. Lorenzo C. Visentin Jairo Bordinhaõ Manfredo Hörner 《无机化学与普通化学杂志》2009,635(8):1225-1230
The preparation and spectroscopic and structural characterization of three ZnII complexes with bis[N‐(2,6‐dimethylphenyl)imine]acenaphthene, L1, and with bis[N‐(2‐ethylphenyl)imine]acenaphthene, L2, are decribed herein. Two of the complexes were prepared from ZnCl2 and the third from Zn(NCS)2. One‐pot reaction techniques were used, leading to high yields. The complexes were characterized by microanalysis, IR and 1H NMR spectroscopy, and single‐crystal X‐ray diffraction. The structures of the complexes are significantly different, with the chloride‐containing species forming distorted tetrahedra around the metal, whereas its thiocyanate analog is dimeric, with each metal at the center of a distorted square pyramid, with bridging and terminal [SCN]– ligands. 相似文献
7.
The single crystal X‐ray data of a mixed anions complex of PbII with 1,10‐Phenantroline, [Pb(phen)(O2CCH3)‐ (O2NO)], shows the complex to be polymeric as a result of acetate ligand bridging. The Pb atom has an asymmetrical eightfold coordination of two nitrogen atoms of the 1,10‐phenanthroline ligand and six oxygen atoms of the nitrate and acetate anions. The arrangement of the 1,10‐phenantroline ligand, acetate and nitrate anions suggest a gap in the coordination around the PbII ion, occupied possibly by a stereoactive lone pair of electrons on lead(II) where the coordination around the lead atoms is hemidirected. There is a π‐π stacking interaction between the parallel aromatic rings of an adjacent chain in the compound which might help to increase the ‘gap' in the coordination around the PbII ion. 相似文献
8.
Li‐Na Zhu Na Xu Yan Ou‐Yang Dai‐Zheng Liao Zong‐Hui Jiang Shi‐Ping Yan Peng Cheng 《无机化学与普通化学杂志》2006,632(15):2500-2504
Two new trinuclear complexes [CuII(NiIIX1)2(C2H5OH)2]· (ClO4)2·2(CH3OH) ( 1 ) and [CuII(NiIIX2)2(H2O)]·(ClO4)2· 0.75(H2O) ( 2 ) (X1 = dianion of 5,6;13,14‐dibenzo‐7,12‐bis(ethoxycarboxyl)‐9‐methyl‐2,3‐dioxo‐1,4,8,11‐tetraazacyclotetradeca‐7,11‐diene. X2 = dianion of 5,6;13,14‐dibenzo‐9,10‐cyclohexano‐7,12‐bis(ethoxycarboxyl)‐2,3‐dioxo‐1,4,8,11‐tetraazacyclotetradeca7,11‐diene.) have been synthesized and characterized by single crystal X‐ray analysis, elemental analysis, IR, UV and EPR spectroscopies. The complexes consist of NiIICuIINiII heteronuclear cationic entities. The central CuII atom of 1 lies in an octahedral coordination environment, while that of 2 resides in a square‐pyramidal coordination sphere. The adjacent trinuclear units of 1 are linked together through π‐π stacking interactions resulting in a 1D supramolecular chain, whereas the π‐π stacking interactions between the contiguous units of 2 lead to a 2D structure. The EPR spectra of the two complexes show a signal of an axially elongated octahedral CuII system in 1 and an axially elongated square‐pyramidal CuII system in 2 , respectively. The hyperfine splitting of the CuII atoms (ICu = 3/2) has also been observed in the EPR spectra. 相似文献
9.
Preparation and Crystal Structures of New Complex Clorides of Lanthanides containing 3, 5‐Dimethylpyridinium Cations: (3, 5‐Dimethylpyridinium)2[LnCl4(H2O)2]Cl (Ln = La, Pr) and (3, 5‐Dimethylpyridinium)3[TbCl6] Crystals of the complex chlorides (3, 5‐dimethylpyridinium)2[LaCl4(H2O)2]Cl ( 1 ), (3, 5‐dimethylpyridinium)2[PrCl4(H2O)2]Cl ( 2 ) and (3, 5‐dimethylpyridinium)3[TbCl6] ( 3 ) have been prepared by reaction of LnCl3 · x H2O (Ln = La, Pr, Tb; x = 6‐7) with 3, 5‐dimethylpyridiniumchloride in ethanol/butanol solution. The crystal structures have been determined from single crystal X‐ray diffraction data. The compounds 1 and 2 are isotypic with each other and crystallize in the triclinic space group P1¯ (Z = 2). The 3, 5‐dimethylpyridinium cations are linked by hydrogen bonds to the anionic part of the structure built up by isolated chloride ions and strings of edge coupled triangulated dodecahedra [LnCl4/2Cl2(H2O)2]—. The organic units are arranged forming a “π‐stacking”. 3 cristallizes monoclinically in the space group P21/c (Z = 4). The structure contains octahedral building units [TbCl6]3—. These octahedra are interconnected by the organic cations via hydrogen bonds forming chains parallel to [0 0 1]. 相似文献
10.
Hydrothermal reactions of 1, 2, 4‐benzenetricarboxylic acid, 1, 10‐phenanthroline and transition metal cations including ZnII or CoII, in basified aqueous solution gave rise to two complexes, [Zn3(btrc)2(1, 10‐phen)2(H2O)2]n ( 1 ), and [Co3(btrc)2(1, 10‐phen)2(H2O)2]n ( 2 ) (btrc = 1, 2, 4‐benzenetricarboxylate, and 1, 10‐phen = 1, 10‐phenanthroline). 1 2 crystalize isotypically in the triclinic space group P1¯. The btrc ligand acts as multi‐dentate bridging ligand in both compound 1 and 2 to link up transition metal atoms into lamella networks, which are further attached into three‐dimensional frameworks through complex hydrogen bonding and π‐π interactions. The photoluminescence spectrum for compound 1 has also been studied. The corresponding reaction with Cu2+ follows another pathway. 相似文献
11.
The blue tetranuclear CuII complexes {[Cu(bpy)(OH)]4Cl2}Cl2 · 6 H2O ( 1 ) and {[Cu(phen)(OH)]4(H2O)2}Cl4 · 4 H2O ( 2 ) were synthesized and characterized by single crystal X‐ray diffraction. ( 1 ): P 1 (no. 2), a = 9.240(1) Å, b = 10.366(2) Å, c = 12.973(2) Å, α = 85.76(1)°, β = 75.94(1)°, γ = 72.94(1)°, V = 1152.2(4) Å3, Z = 1; ( 2 ): P 1 (no. 2), a = 9.770(3) Å, b = 10.118(3) Å, c = 14.258(4) Å, α = 83.72(2)°, β = 70.31(1)°, γ = 70.63(1)°, V = 1252.0(9) Å3, Z = 1. The building units are centrosymmetric tetranuclear {[Cu(bpy)(OH)]4Cl2}2+ and {[Cu(phen)(OH)]4(H2O)2}4+ complex cations formed by condensation of four elongated square pyramids CuN2(OH)2Lap with the apical ligands Lap = Cl, H2O, OH. The resulting [Cu4(μ2‐OH)2(μ3‐OH)2] core has the shape of a zigzag band of three Cu2(OH)2 squares. The cations exhibit intramolecular and intermolecular π‐π stacking interactions and the latter form 2D layers with the non‐bonded Cl– anions and H2O molecules in between (bond lengths: Cu–N = 1.995–2.038 Å; Cu–O = 1.927–1.982 Å; Cu–Clap = 2.563; Cu–Oap(OH) = 2.334–2.369 Å; Cu–Oap(H2O) = 2.256 Å). The Cu…Cu distances of about 2.93 Å do not indicate direct interactions, but the strongly reduced magnetic moment of about 2.74 B.M. corresponds with only two unpaired electrons per formula unit of 1 (1.37 B.M./Cu) and obviously results from intramolecular spin couplings (χm(T‐θ) = 0.933 cm3 · mol–1 · K with θ = –0.7 K). 相似文献
12.
The reaction of CuCl2 · 2 H2O, 1,10‐phenanthroline (phen), suberic acid and Na2CO3 in a CH3CN–H2O solution yielded blue needle‐like crystals of [Cu2(phen)2(C8H12O4)2] · 3 H2O. The crystal structure (monoclinic, P21/n, a = 10.756(2) Å, b = 9.790(2) Å, c = 18.593(4) Å, β = 91.15(3)°, Z = 2, R = 0.043, wR2 = 0.1238) consists of suberato‐bridged [Cu2(phen)2(C8H12O4)4/2] layers and hydrogen bonded H2O molecules. The Cu atoms are coordinated by two N atoms from one bidentate chelating phen ligand and three carboxyl O atoms from different suberato ligands to form distorted [CuN2O3] square‐pyramids with one carboxyl O atom at the apical position (d(Cu–N) = 2.017(2), 2.043(3) Å, basal d(Cu–O) = 1.936(2), 1.951(2) Å and axial d(Cu–O) = 2.389(2) Å). Two [CuN2O3] square‐pyramids are condensed via a common O–O edge to a centrosymmetric [Cu2N4O4] dimer with the Cu…Cu distance of 3.406(1) Å indicating no interaction between Cu atoms. The resultant [Cu2N4O4] dimers are interlinked by the tridentate suberato ligands to form [Cu2(phen)2(C8H12O4)4/2] layers parallel to (101). These are assembled via π‐π stacking interactions into 3D network with H2O molecules in the tunnels extending in the [010] direction. 相似文献
13.
A new two‐dimensional metal‐organic coordination polymer [Cd2(2,3,2′,3′‐sdpa)(H2O)3] · 2H2O ( 1 ) were hydro(solvo)thermally synthesized by the reaction of 2,3,2′,3′‐sulfonyldiphthalic acid (2,3,2′,3′‐H4sdpa) with Cd(NO3)2 · 4H2O and characterized by elemental analysis, thermogravimetry, IR and luminescence spectroscopy, and X‐ray diffraction. In complex 1 , two kinds of cadmium atoms are linked together by anionic sdpa4– ligands to form a 2D metal‐organic network. The adjacent 2D layers further interact with each other through hydrogen bonds and π ··· π interactions to form a 3D supramolecular structure. The luminescence spectra and thermal properties of 1 were also investigated. 相似文献
14.
The tris‐bidentate complex [Ni(C12H8N2)2(CO3)] was synthesized by the reaction of Na2CO3, 1,10‐phenanthroline (phen = C12H8N2) and NiSO4 · 6 H2O in the presence of succinic acid in a CH3OH–H2O solution. The compound crystallizes as heptahydrate. The crystal structure (monoclinic, P21/c (no. 14), a = 9.897(1), b = 26.384(2), c = 10.582(1) Å, β = 105.87(1)°, Z = 4, R = 0.0505, wR2 = 0.1029 for 3166 observed reflections (F ≥ 2σ(F ) out of 6100 unique reflections) consists of hydrogen bonded water molecules and [Ni(phen)2(CO3)] complex molecules. The Ni atoms are sixfold octahedrally coordinated by the four N atoms of two bidentate chelating phen ligands and by two O atoms of the bidentate chelating carbonate group with d(Ni–N) = 2.092–2.100 Å, d(Ni–O) = 2.051, 2.079 Å. The complex molecules are stacked into 2D corrugated layers parallel to (010) via two types of intermolecular π‐π stacking interactions. One occurs between two quinoline rings of neighboring phen ligands at the distance of 3.63 Å in [010] direction and the other results from 1D π‐π stacking interactions through partially covered phen rings at alternative distances of 3.26 Å and 3.33 Å in [001] direction. The water molecules are sandwiched between 2D layers. 相似文献
15.
The title compound [Cu2(phen)2(C9H14O4)2] · 6 H2O was prepared by the reaction of CuCl2 · 2 H2O, 1,10‐phenanthroline (phen), azelaic acid and Na2CO3 in a CH3OH/H2O solution. The crystal structure (monoclinic, C2/c (no. 15), a = 22.346(3), b = 11.862(1), c = 17.989(3) Å, β = 91.71(1)°, Z = 4, R = 0.0473, wR2 = 0.1344 for 4279 observed reflections) consists of centrosymmetric dinuclear [Cu2(phen)2(C9H14O4)2] complexes and hydrogen bonded H2O molecules. The Cu atom is square‐planar coordinated by the two N atoms of the chelating phen ligand and two O atoms of different bidentate bridging azelaate groups with d(Cu–N) = 2.053, 2.122(2) Å and d(Cu–O) = 1.948(2), 2.031(2) Å. Two azelaate anions bridge two common Cu atoms via the terminal O atoms (d(C–O) = 1.29(2) Å; d(C–C) = 1.550(4)–1.583(4) Å). Phen ligands of adjacent complexes cover each other at distances of about 3.62 Å, indicating π‐π stacking interaction, by which the complexes are linked to 1 D bands. 相似文献
16.
Jian Zhang Zhao‐Ji Li Yi‐Hang Wen Yao Kang Jian‐Kai Cheng Yuan‐Gen Yao 《无机化学与普通化学杂志》2004,630(15):2731-2735
Two new metal succinates modified by rigid bipyridines, Cd(4, 4′‐bpy)(C4H4O4)·1/4H2O ( 1 ) and Cu(2, 2′‐bpy)(C4H4O4)0.5(NO3)(H2O) ( 2 ) (bpy = bipyridine), have been synthesized by hydrothermal reactions and structurally determined. Complex 1 crystallizes in the orthorhombic space group Cmca with the cell parameters a = 11.696(2), b = 15.554(2), c = 15.874(3) Å, α = β = γ = 90.00°, V = 2888(3) Å3, Z = 8. Complex 2 crystallizes in the triclinic space group with a = 7.077(1), b = 9.838(2), c = 10.461(2) Å, α = 71.941(3)°, β = 73.078(3)°, γ = 74.502(3)°, V = 649.8(2) Å3, Z = 2. In complex 1 , a 2‐D network was formed by Cd‐succinato bonding. The 2‐D networks are pillared by 4, 4′‐bpy ligands, forming a 3‐D grid framework. The 2‐fold interpenetration of the resulting 3‐D frameworks completes the molecular structure. In complex 2 , the CuII atom adopts a distorted octahedral in which the CuII atoms are bridged by two H2O molecules into an infinite zigzag chain, [Cu2(H2O)2(C4H4O4)]n. The neighboring chains are further linked by π‐π stacking interactions into a 2‐D network, and the interlayer hydrogen bonds lead to the final 3‐D crystal structure. 相似文献
17.
Both tetrakis(trimethylphosphine)cobalt(0) and methyltetrakis(trimethylphosphine)cobalt(I) react with 2‐(benzylideneamino)pyridine ( 1 ) exclusively giving a complex of composition (η2(N,C)‐2‐Py‐N=CH‐C6H5)Co(PMe3)3 ( 2 ), which is shown by single‐crystal X‐ray diffraction to constitute the first π‐coordinate imine cobalt(0) complex. The route of formation is proposed and discussed. 相似文献
18.
Crystals of the zwitterionic copper(I) π‐complex [(HC≡CCH2NH3)Cu2Br3] have been synthesized by interaction of CuBr with [HC≡CCH2NH3]Br in aqueous solution (pH < 1) and X‐ray studied. The crystals are monoclinic: space group P21/n, a = 6.722(4), b = 12.818(8), c = 9.907(3) Å, β = 100.25(4)°, V = 840.0(8) Å3, Z = 4, R = 0.0592 for 3015 reflections. The crystal structure of the π‐complex contains isolated [(HC≡CCH2NH3)+(Cu2Br3)?]2 units which are incorporated into a framework by strong hydrogen N–H···Br and C≡C–H···Br bonds. The length of π‐coordinated propargylammonium C≡C bond is equal 1.216(8) Å and Cu(I)–(C≡C) distance equals 1.958(5) Å. 相似文献
19.
[Cu(C12H8N2)(C4H4O4)(H2O)]2 · C4H6O4 was prepared by the reaction of succinic acid, CuCl2 · 2 H2O, 1,10‐phenanthroline (phen = C12H8N2), and Na2CO3 in a CH3OH–H2O solution. The crystal structure (triclinic, P 1 (no. 2), a = 7.493(1), b = 9.758(1), c = 13.517(1) Å; α = 68.89(1)°, β = 88.89(1)°, γ = 73.32(1)°, Z = 1, R = 0.0308, wR2 = 0.0799 for 3530 observed reflections (F ≥ 2σ(F ) out of 3946 unique reflections) consists of hydrogen bonded succinic acid molecules and succinato bridged 1 D zipperlike supramolecular [Cu(phen)(C4H4O4)2/2(H2O)]2 double chains based on 1 D π‐π stacking interactions between the chelating phen systems at distances of 3.71 Å and 3.79 Å. The Cu atoms are fivefold trigonal bipyramidally coordinated by two N atoms of the bidentate chelating phen ligand and three O atoms of one water molecule and two bidentate bridging succinate ligands. The water O atom and one phen N atom are at the apical positions (equatorial: d(Cu–O) = 1.945, 2.254(2) Å, d(Cu–N) = 2.034(2) Å; axial: d(Cu–O) = 1.971(2) Å, d(Cu–N) = 1.995 Å). 相似文献
20.
The title compound [Bi(OSitBuPh2)3] ( 1 ) was prepared by the reaction of [Bi(OtBu)3] with tBuPh2SiOH in toluene at room temperature. The compound crystallizes in the monoclinic space group P21/n with the lattice constants a = 17.610(1), b = 20.153(1), c = 26.655(1) Å and β = 105.503(3)°. In the solid state a dimer is observed as a result of weak bismuth π‐arene interactions. The bismuth arene centroid distance amounts to 3.340(7) Å. Thermolysis of compound 1 performed under argon gave a heterogeneous product. The powder X‐ray diffraction analysis of the latter shows elementary bismuth as the only crystalline phase. 相似文献