共查询到12条相似文献,搜索用时 0 毫秒
1.
Hossein Aghabozorg Mohammad Ghadermazi Fatemeh Zabihi Bahar Nakhjavan Janet Soleimannejad Elahe Sadr-khanlou Abolghasem Moghimi 《Journal of chemical crystallography》2008,38(9):645-654
Abstract Three new complexes of zinc(II) with three different proton transfer compounds, obtained from pyridine-2,6-dicarboxylic acid
(dipicolinic acid) and different Lewis bases, were synthesized and characterized using IR, 1H NMR and 13C NMR spectroscopy and single crystal X-ray diffraction. The chemical formulae and space groups of the complexes are (pipzH2)[Zn(pydc)2] · 4H2O, P21/n (1), (EDGnH2)[Zn(pydc)2] · 3H2O, P21/c (2) and (pdaH2)[Zn(pydc)2] · 4H2O,
(3) where pydc, pipz, EDGn and pda are standing for dipicolinic acid, piperazine, ethylenediguanidine and 1,3-propanediamine
respectively. Cell parameters of the complexes are a = 7.9493(4) ?, b = 13.4386(7) ?, c = 21.0557(11) ?, β = 90.415(5)° for 1; a = 9.785(3) ?, b = 25.671(4) ?, c = 9.3402(16) ?, β = 90.790(17)° for 2 and a = 8.411(5) ?, b = 11.650(7) ?, c = 12.793(8) ?, α = 115.534(9)°, β = 92.791(10)°, γ = 97.778(10)° for 3. The three crystal structures illustrate that the metal ion is six-coordinated by two pydc’s. In all three compounds a large
number of O–H⋯O, N–H⋯O and C–H⋯O hydrogen bonds are observed. These interactions as well as other noncovalent interactions
such as ion–pairing and π–π stacking play an important role in the formation and stabilization of supramolecular systems in
the crystal lattices.
Index Abstract The main purpose of this paper is to report and discuss about the synthesis, characterization, crystal structure and non-covalent
interactions of three supramolecular frameworks of six-coordinated Zn(II) complexes, obtained by the reaction of different
proton transfer compounds, i.e. (pipzH2)(pydc), (EDGnH2) (pydc) · 3H2O and (pdaH2)(pydc) · (pydcH2) · 2.5H2O with corresponding metallic salts.
相似文献
2.
A. Tadjarodi F. Adhami Z. Gharehdaghi G. Kickelbick 《Journal of chemical crystallography》2009,39(5):368-371
Abstract A novel cadmium complex [Cd(C7H4NS2)2(phen)] was synthesized by the reaction of a polymeric complex, [Cd(C7H4NS2)2]
n
, with 1,10-phenanthroline (phen) as a ligand. The crystal structure was determined by single-crystal X-ray diffraction. The
crystallographic data are: triclinic , a = 8.3670(6) ?, b = 10.9898(8) ?, c = 17.1404(13) ?, α = 95.567(2)o, β = 95.881(2)o, γ = 109.034(1)o, V = 1471.26(19) ?3 and Z = 2. The final R value is 0.0375 for 7154 reflections. The compound [Cd(C7H4NS2)2(phen)] is monomeric revealing a coordination sphere of N4S2 type. The Cd atom is surrounded by two thiazole N atoms, two exocyclic S atoms from two bidentate 1,3-benzothiazole-2-thiolate
anions and two 1,10-phenanthroline N atoms. The Cd cation is six-coordinate with a distorted octahedral geometry.
Graphical Abstract The synthesis and crystal structure of a novel monomeric complex ‘[Cd(C7H4NS2)2(phen)]’ obtained by the reaction of polymeric complex, [Cd(C7H4NS2)2]
n
, with 1,10-phenanthroline is reported.
相似文献
3.
Synthesis,Characterization and Crystal Structure Determination of a Hepta-coordinated Cadmium(II) Complex with Thiocyanato-bridges 总被引:1,自引:0,他引:1
Dongbin Dang Jide Sun Yan Bai Hui Gao Weili Shang 《Journal of chemical crystallography》2009,39(9):683-687
Abstract A new cadmium(II) complex [(C28H24N6)Cd(SCN)2]2(CH3OH)2 (1) has been synthesized and characterized by IR, UV spectra, TG-DTA technique and single crystal X-ray diffraction analysis.
The crystallographic data for compound 1: triclinic P1ˉ, a = 9.630(2) Å, b = 11.123(3) Å, c = 15.396(4) Å, α = 106.93(1)°, β = 91.60(1)°, γ = 99.99(1)°, V = 1,548.5(6) Å3, Z = 1, Dc = 1.512 mg/m3, F(000) = 716, R
1 = 0.0332, wR
2 = 0.0907. The molecule contains a symmetrical dinuclear unit in which two Cd(II) ions are double bridged by two di-μ-1,3-SCN− anoins with a cadmium–cadmium separation of 6.48 Å. Each Cd(II) ion is seven-coordinated with six nitrogen atoms and a sulfur
atom to form a monocapped trigonal prism coordination geometry. In addition, the molecule is further connected by multiform
intermolecular C–H···π, π···π interactions and hydrogen bonds to form a three-dimensional supramolecular structure.
Graphical Abstract A hepta-coordinated Cd(II) complex which exhibits a distorted a monocapped trigonal prism coordination geometry has been achieved
by using bisbidentate Schiff-base ligand and thiocyanate anion.
相似文献
4.
Xiu-rong Li Zhi-hui Zhang Xiu-feng Liu Hong Gao Xiang-nan Zhang Zhi-jin Fan 《Journal of chemical crystallography》2008,38(10):781-786
Abstract Two new complexes, [Cu(L)2(CH3OH)] · (ClO4)2 (1) and [Cu(L)2(H2O)] · (NO3)2 (2), have been synthesized and their crystal structures have been determined by X-ray analysis, where L = 3-(3,5-bimethylpyrazole-yl)-6-chloro-pyridazine].
The complex 1 crystallizes in the monoclinic, space group C2/c, and the coordination configuration of copper (II) is better described as trigonal pyramidal geometry with four N atoms from
L and one Omethanol. The coordination configuration of 2 is quite similar to that of 1 except Owater instead of Omethanol. The intermolecular hydrogen bonds link the repeat units and extend the molecules to multinuclear structures in both compounds.
The spectral properties of the title compounds have been studied and discussed. Furthermore, the antibacterial activities
of the title compounds have been detected, the results indicate that the ligands and two copper(II) complexes exhibit certain
fungicidal activities again several bacteria.
Index Abstract Two new complexes, [Cu(L)2(CH3OH)]·(ClO4)2 (1) and [Cu(L)2(H2O)]·(NO3)2 (2), have been synthesized and their crystal structures
have been determined by X-ray analysis, where L= 3-(3,5-bimethylpyrazole-yl)-6-chloro-pyridazine. The intermolecular hydrogen
bonds extend the molecules to multinuclear structures in both compounds.
相似文献
5.
Hong-Kun Zhao Xiu-Guang Wang En-Cui Yang Xiao-Jun Zhao 《Journal of chemical crystallography》2008,38(8):625-629
Abstract The cobalt(II) complex, [Co(abz)2(SCN)2] 1, has been synthesized by the reaction of cobalt(II) nitrate with ammonium thiocyanate and abz ligands (abz = 2-aminobenzimidazole),
and was fully structurally characterized by elemental analysis, IR spectra, X-ray diffraction and thermogravimetric experiments.
It crystallizes in the triclinic P-1 space group with a = 8.6316(10), b = 9.3426(10), c = 13.254(2) ?, α = 95.793(2), β = 95.870(2), γ = 115.7380(10), V = 945.1(2) ?3, and Z = 2. The central cobalt(II) atom is four-coordinated to nitrogen donors from two neutral abz ligands and two isothiocyanate
anions respectively, adopting a slightly distorted tetrahedral geometry. In addition, the intermolecular N–H···N and N–H···S
hydrogen bonds interactions link the discrete mononuclear units into infinite three-dimensional networks.
Index Abstract The essence sentence of the paper: In the mixed-ligand mononuclear complex, [Co(abz)2(SCN)2], the four coordinated cobalt(II) atom exhibits a slightly distort tetrahedron, which is further assembled into 3D infinite
network by intermolecular hydrogen interactions.
相似文献
6.
Abstract The title complex [Co2(bte)3(NCS)4(H2O)2]
n
(bte = 1,2-bis(triazol-1-yl)ethane) has been prepared. Single-crystal X-ray analysis reveals that the complex crystallizes
in space group P ī with a = 7.7962(2), b = 8.3407(4), c = 14.7735(5) ?, α = 86.835(2), β = 76.2031(9), γ = 80.583(3)°. The crystal consists of two discrete complexes, [Co(bte)(NCS)2(H2O)2] and [Co(bte)2(NCS)2]. The structure of [Co(bte)(NCS)2(H2O)2] consists of neutral chain containing Co(II) bridged by bte molecules. The six-co-ordination of Co2+ is achieved by means of two trans NCS− ions and water molecules. The structure of [Co(bte)2(NCS)2] demonstrates a one-dimensional neutral chain through bte-bridge, in which the Co(II) atom is in a distorted octahedral environment
formed by four nitrogen atoms of the triazoles and two nitrogen atoms from two trans thiocyanato liagnds.
Index abstract
Synthesis and Crystal Structure of a Polymeric Cobalt(II) Complex with 1,2-bis(1,2,4-triazol-1-yl)ethane
This paper reports the synthesis and crystal structure of complex [Co2(bte)3(NCS)4(H2O)2]n (bte = 1,2-bis(triazol-1-yl)ethane), which consists two different neutral chains containing Co(II) bridged by bte molecules.
相似文献
7.
Abstract The crystal structures of (2-oxo-2H-quinaxalin-1-yl)-acetic acid and its cobalt and nickel complexes are determined. The (2-oxo-2H-quinaxalin-1-yl)-acetic
acid (1) crystallizes in orthorhombic, Pbca, a = 12.8571(11) ?, b = 9.4267(8) ?, c = 15.0095(13) ?, the cobalt complex of (2-oxo-2H-quinaxalin-1-yl)-acetic acid (2) crystallizes as dihydrate in triclinic, P-1 space group with a = 4.81150(10) ?, b = 11.8631(2) ?, c = 12.4867(3) ?, α = 71.7800(10)°, β = 79.2490(10)°, γ = 84.9020(10)° whereas the nickel complex of (2-oxo-2H-quinaxalin-1-yl)-acetic
acid (3) crystallizes in monoclinic, P21/c space group with a = 14.9210(5) ?, b = 4.81730(10) ?, c = 15.7672(5) ?. and β = 99.823(2)°. The crystal structure of the ligand and the complexes are compared with structures of
(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-acetic acid and its cobalt and nickel complexes.
Index Abstract The crystal structures of (2-oxo-2H-quinaxalin-1-yl)-acetic acid and its nickel and cobalt complexes are compared with (1,3-dioxo-1,3-dihydro-isoindol-2-yl)-acetic
acid and its corresponding complexes with nickel(II) and cobalt(II).
相似文献
8.
Ki-Young Choi 《Journal of chemical crystallography》2008,38(1):53-56
Abstract The tridentate Schiff base carboxylate-containing ligand 2-pyridylmethylamino-3-butyric acid (Hpaba) reacts with copper(II)
perchlorate to give the one-dimensional chain complex {[Cu(μ-paba)](ClO4)·H2O}
n
(1). The coordination geometry of each copper(II) ion is best described as a square-plane with two nitrogen atoms and one carboxylate
oxygen atom of the ligand, and one carboxylate oxygen atom belong to another ligand. It crystallizes in the monoclinic system
P21/c with a = 12.717(2), b = 7.9163(15), c = 14.981(2) ?, β = 111.14(1)°, V = 1406.8(4) ?3, Z = 4. Cyclic voltammogram of 1 undergoes the reversible one-electron oxidation to the Cu(III) and the reversible one-electron reduction to the Cu(I) state.
Graphical Abstract Crystal structure of 1 reveals a syn-anti carboxylate-bridged one dimensional chain complex in which the coordination environment around each copper(II) ion exhibits
a distorted square plane.
相似文献
9.
Wan-Ju Zhang Yan-Tuan Li Zhi-Yong Wu Zhi-Qiang Liu Zhi-Chao Zheng 《Journal of chemical crystallography》2008,38(9):655-658
Abstract A mixed-ligand complex Cu(IDA)(NBZIM)(H2O) (IDA = iminodiacetate dianion, NBZIM = 6-nitro-1H-benzimidazole) has been synthesized and characterized by elementary analysis,
IR, UV-Vis, molar conductivity and single crystal X-ray diffraction. It crystallizes in the triclinic system, space group
P
with a = 6.9423(14), b = 9.3100(19), c = 11.754(2) ?, α = 69.61(3), β = 85.87(3), γ = 83.87(3)°, Z = 2, R
1 = 0.0463 and ωR
2 = 0.0987. The single crystal X-ray analysis reveals that the Cu(II) atom is coordinated by one tridentate iminodiacetate
dianion, one monodentate nitrobenzimidazole molecule and one water molecule, in a distorted square base pyramidal coordination
geometry. The iminodiacetate dianion chelates the Cu(II) atom in the meridional mode. A three-dimensional network is formed
by hydrogen bonds and stabilized by NBZIM π-π stacking interactions. The interaction of the complex with Fish sperm DNA has
also been studied using absorption spectra.
Index Abstract In the crystal of Cu(IDA)(NBZIM)(H2O), each molecule is linked to other six neighbouring ones by ‘eight’ hydrogen bonds in four cases by means of the ‘symmetry
related’ linkage.
相似文献
10.
The tetraazamacrocyclic copper(II) complex, [Cu(L)](ClO4)2 (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14.4.01.18.07.12]docosane), hydrolyzes DMF at room temperature. The formate anion which is one of the hydrolyzed species of DMF coordinates
to the copper(II) ion to form [Cu(L1)(O2CH)](ClO4) · H2O (1). The crystals of the complex 1 were isolated and structurally characterized by a combination of analytical, spectroscopic, and crystallographic methods.
In 1, the macrocyclic ligand contains two trans fused cyclohexane rings, and the coordination geometry about the copper(II) ion
adopts a square pyramid with four equatorial nitrogen atoms from the macrocycle and an oxygen atom from the formato ligand
with an uncoordinated perchlorate ion. 相似文献
11.
Two 1D polymeric complex, [Cu(CBC)2(Dabco)(H2O)]
n
(1) and [Ag2(HBC)2(Dabco)]
n
(2) have been synthesized and characterized by X-ray single crystal analysis, where CBCH is p-chlorobenzoic acid, HBCH 2 is 2-hydroxybenzoic acid and Dabco is 1,4-diazabicyclo[2.2.2]octane. Complex 1 has been obtained in high yield by hydrothermal synthesis from CuO and CBCH and Dabco, and complex 2 has been obtain by evaporation of the solvent from silver salicylate and Dabco, 1 crystallizes in the orthorhombic space group Pmn2
1
with a = 24.3310(5) ?, b = 6.9050(6) ?, c = 5.9980(5) ?, Z = 2, V = 1007.70(4) ?3 and Dx = 1.657 g cm−3, 2 crystallizes in the monoclinic space group P2
1
/m with a = 10.292(3) ?, b = 6.913(2) ?, c = 14.417(4) ?, β = 95.660(5), Z = 2, V = 1020.8(5) ?3 and Dx = 1.959 g cm−3. The final R value is 0.0302 for 1323 measured reflections for 1 and the final R value is 0.0684 for 1545 measured reflections for 2. The atomic arrangement is built by infinite one-dimensional polymeric chain in both complexes. These chains are cross-linked
by hydrogen bonds involving the coordinated water molecules to form a two-dimensional framework in complex 1. 相似文献
12.
Abstract The novel ionic compound [H2bdtd][CoCl4] · 2H2O (1) was prepared by the reaction between CoCl2 and 2,13-bis(acetamido)-3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane (bdtd) in adjusted to pH 3.0 by 1.0 M HCl and structurally characterized. The crystals are monoclinic C2/c with a = 18.7777(9), b = 9.7356(4), c = 20.0884(9) ?, β = 109.6340(10)°, V = 3458.9(3) ?3, Z = 4. The dication H2bdtd occupies a special position about an inversion center. The cobalt(II) atom in the anion is in a distorted tetrahedral
environment with four chloride ligands. The crystal structure is stabilized by a variety of hydrogen-bonding contacts involving
the dication, chloride anions and solvent water molecules. Cyclic voltammetry of [CoCl4]2− anion in 1 undergoes irreversible one-electron reduction to the CoII/CoI.
Graphical abstract The crystal structure of the ionic compound [H2bdtd][CoCl4] · 2H2O (1) consists of [H2bdtd]2+ cation, [CoCl4]2− anion and water molecules joined together by ionic interaction and hydrogen bonds.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献