scholarly journals Synthesis, Crystal Structures and Catalytic Activities of Two Copper Coordination Compounds Bearing an N,N’-Dibenzylethylenediamine Ligand

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 528
Author(s):  
Chao Liu ◽  
Weiwei Zhang ◽  
Gaigai Cai
Keyword(s):  
Coordination Compounds ◽  
Chain Structure ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalytic Activities ◽  
Copper Compounds ◽  
Copper Coordination ◽  
1D Chain ◽  
Elemental Analyses

Two copper coordination compounds bearing an N,N’-dibenzylethylenediamine ligand, namely [Cu3L(CH3COO)6]n (1) and [(CuCl4)∙(C6H5CH2NH2CH2)2] (2) (L = N,N’-dibenzylethylenediamine) were synthesized by the ethanol refluxing method. Powder X-ray diffraction (PXRD), infrared spectra (IR), elemental analyses, and single crystal X-ray diffraction were used to characterize and verify their structures. Structural analyses showed that the asymmetric unit of compound (1), composed of two Cu(II) cations, three acetate anions, and half of the ligand, was bridged by one acetate to obtain an infinite 1D chain structure. The analyses further showed that the asymmetric unit of compound (2), composed of two crystallographically independent [C6H5CH2NH2CH2]+ units, four chloride anions, and one central Cu(II) cation is connected into an infinite 2D network structure by the hydrogen bonding interactions. The copper compounds were used to catalyze the decomposition of H2O2, and the results showed that both of the compounds exhibited excellent catalytic activities under optimized conditions.

A Pyrazine-Bridged Ni(II) Coordination Polymer

2002 ◽  
Vol 57 (11) ◽  
pp. 1191-1194 ◽  
Author(s):  
Chirantan Roy Choudhury ◽  
Subrata Kumar Dey ◽  
Sutapa Sen ◽  
Bappaditya Bag ◽  
Samiran Mitra ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Chain Structure ◽  
Water Molecules ◽  
Polymeric Complex ◽  
X Ray Diffraction ◽  
Intermolecular Hydrogen Bonds ◽  
X Ray ◽  
Elemental Analyses ◽  
Coordinated Water ◽  
Nitrate Anions

The single pyrazine-bridged polymeric complex {[Ni(pyz)(H2O)4](NO3)2.2H2O}n has been synthesised and characterised by elemental analyses, IR and UV-vis spectra, and a single-crystal X-ray diffraction study. The coordination around the Ni centre is perfectly octahedral. The Ni(H2O)4 coordination planes are bridged by pyrazine ligands forming an infinite chain structure. Two nitrate anions and two water molecules exist in the lattice and are linked by intermolecular hydrogen bonds to the coordinated water molecules.

Synthesis, Crystal Structure and Antibacterial Activity of 1D Chain Ca(II) Coordination Polymer

2011 ◽  
Vol 282-283 ◽  
pp. 96-99
Author(s):  
Xi Shi Tai
Keyword(s):  
Crystal Structure ◽  
Antibacterial Activity ◽  
Coordination Polymer ◽  
Chain Structure ◽  
Molar Conductance ◽  
Dimensional Chain ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
1D Chain

1D chain Ca(II) coordination polymer was synthesized and characterized by elemental analysis, molar conductance, IR and single-crystal X-ray diffraction, The results of crystal structure show that each Ca(II) ion forms eight-coordinated and the complex formed one dimensional chain structure by the oxygen atoms of carboxylate and water bridged. The antibacterial activity of the Ca(II) coordination polymer and the ligand were tested, the results show that the complex show considerable antibacterial activity against escherichia coli, bacillus subtilis and staphylococcus white.

Assembly of Three Cadmium(II) Complexes Based on Flexible α,ѡ-Bis(benzimidazolyl)alkane Ligands

2012 ◽  
Vol 67 (8) ◽  
pp. 791-798 ◽  
Author(s):  
Jian-Chen Geng ◽  
Cui-Huan Jiao ◽  
Jin-Ming Hao ◽  
Guang-Hua Cui
Keyword(s):  
Solid State ◽  
Chain Structure ◽  
Helical Chain ◽  
Supramolecular Network ◽  
Stacking Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Π Stacking ◽  
Elemental Analyses ◽  
Network Complex

Three flexible α,ѡ-bis(5,6-dimethylbenzimidazolyl)alkane ligands with different spacers were reacted with CdX2 (X = Cl, Br, I) hydrothermally, resulting in three coordination architectures, namely [CdI2(L1)]n (1), [CdBr2(L2)]n (2), and Cd2Cl4(L3)2 (3) [L1 = 1,3-bis(5,6- dimethylbenzimidazole)propane, L2 = 1,5-bis(5,6-dimethylbenzimidazole)pentane, L3 = 1,6- bis(5,6-dimethylbenzimidazole)hexane]. They have been characterized by elemental analyses, IR spectra, thermogravimetric (TG) analysis, and single-crystal X-ray diffraction. Complex 1displays a helical chain linked by the ligands L1, and a 2D supramolecular network is constructed through π-π stacking interactions; complex 2shows a helical chain structure with connections through two kinds of strong π-π stacking interactions into an intricate 3D supramolecular network; complex 3 contains dinuclear metallomacrocycles. The fluorescence properties of 1-3have been investigated in the solid state

scholarly journals Imidazole-containing Cd Metal-Organic Framework with Selective Adsorption Properties

2019 ◽  
Vol 118 ◽  
pp. 01044
Author(s):  
Yu-Ling Li ◽  
Zin Zheng ◽  
Hui Nie ◽  
Chun-Mei Zhao ◽  
Yu-Fei Wang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Chain Structure ◽  
Adsorption Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
1D Chain ◽  
Metal Organic ◽  
Organic Framework

Metal-organic framework material [Cd(tib)(dnbpdc) (H2O)]·2DMF·2H2O (1) [tib = 1, 3, 5-tris(1-imidazolyl)benzene, H2dnbpdc = 2, 2′-dinitro-4, 4′-biphenyldicarboxylic acid] was synthesized and characterized by Thermogravimetric analyses (TGA), Powder X-ray diffraction (PXRD) analyses and Bruker D8 Advance X-ray diffractometer. The results showed that 1 was a 1D chain structure to be joined together by hydrogen bonds to generate a 3D supramolecular structure. CO2 and N2 adsorption behavior of the material was studied. It is significative that 1 can selective sorption of CO2.

Hydrothermal Synthesis and Crystal Structure of a Novel Pb(II) Coordination Polymer

2011 ◽  
Vol 66 (1) ◽  
pp. 103-106 ◽  
Author(s):  
Xiu-Yan Wang ◽  
Shuai Ma ◽  
Ting Li ◽  
Ng Seik Weng
Keyword(s):  
Coordination Polymer ◽  
Chain Structure ◽  
The Novel ◽  
Two Dimensional ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
1D Chain

The novel coordination polymer, [Pb(1,4-chdc)(L)], 1, (1,4-H2chdc = cyclohexane-1,4-dicarboxylic acid and L = 11-fluoro-dipyrido[3,2-a:2' ,3'-c]phenazine), has been synthesized using a hydrothermal method and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal data: C26H19FN4O4Pb, triclinic, space group P1, a = 9.074(5), b = 9.499(5), c = 13.853(5) Å , α = 85.640(5), β = 76.127(5), γ = 74.730(5)°, V = 1118.2(9)°A3, Z = 2. The 1,4-chdc ligands link the Pb(II) atoms to form a 1D chain structure. The L ligands are attached on both sides of the chains. Further, π-π interactions among neighboring chains lead to a two-dimensional supramolecular layer

Synthesis and characterization of ITr-protected group 11 metal trimethylsilylchalcogenolates

2020 ◽  
pp. 1-9
Author(s):  
Dickron R. Nahhas ◽  
John F. Corrigan
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Compounds ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Protected Group ◽  
Copper Coordination

This work describes the synthesis of group 11 metal trimethylsilylchalcogenolate complexes [(ITr)M-ESiMe3] stabilized by the large NHC ligand bis-1,3-tritylimidazole-2-ylidene (ITr). The thiolates and selenolates of Cu, Ag, and Au are accessed from either [(ITr)MOAc] (M = Cu, Ag) and E(SiMe3)2 or [(ITr)AuCl] and Li[ESiMe3] (E = S, Se). All complexes were characterized spectroscopically and, for the copper coordination compounds, via single crystal X-ray diffraction analysis.

Synthesis and Crystal Structures of Copper(II), Zinc(II), Lead(II) and Cadmium(II) Tetrazole-5-carboxylate Complexes Generated via in situ Hydrolysis Reaction

2010 ◽  
Vol 65 (12) ◽  
pp. 1467-1471 ◽  
Author(s):  
Jun-Feng Kou ◽  
Meng Su ◽  
Yu-Hong Zhang ◽  
Zhan-Dong Huang ◽  
Seik Weng Ng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Acid Ethyl Ester ◽  
Chain Structure ◽  
Dinuclear Complexes ◽  
Dsc Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
1D Chain ◽  
Polymeric Framework

Four metal complexes, namely [Cu2(ttzCOO)2(H2O)4]・4H2O (1), [Zn2(ttzCOO)2(H2O)6]・2H2O (2), [Pb(ttzCOO)(H2O)2]n (3), and {[Cd(ttzCOO)(H2O)]・1/2H2O}n (4), where ttzCOO2− = tetrazole-5-carboxylate dianion, have been prepared by the reaction of the sodium salt of 1Htetrazole- 5-carboxylic acid ethyl ester in aqueous methanolic solution at room temperature with CuCl2, ZnI2, Pb(NO3)2, or Cd(NO3)2, respectively. The compounds were characterized by elemental analysis, IR spectroscopy, TG-DSC analysis and single-crystal X-ray diffraction. While 1 and 2 are structurally similar dinuclear complexes, 3 and 4 exhibit a 1D chain structure and a 3D polymeric framework, respectively.

scholarly journals A new Pb(II)-based coordination polymer constructed by 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid and N-donor co-ligand: crystal structure and anti-glioma activity

2019 ◽  
Vol 42 (1) ◽  
pp. 13-18
Author(s):  
Rui Wang ◽  
Bo Wei ◽  
Le Wang ◽  
Da-Liang Kong ◽  
Guo-Zhang Hu ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Mechanical Grinding ◽  
Hydrothermal Conditions ◽  
Dioic Acid ◽  
One Dimensional ◽  
X Ray ◽  
1D Chain ◽  
Elemental Analyses ◽  
Diphenyl Tetrazolium Bromide ◽  
Methyl Benzene

Abstract A new lead(II)-organic architecture [Pb(HL) (dipyrido[3,2-a:2′,3′-c]phenazine (dppz))](H2O)2 (1) was successfully prepared under hydrothermal conditions by using organic-acid linker 5-((4-carboxyphenoxy)methyl) benzene-1,3-dioic acid (H3L) and N-donor chelating ligand dppz. The as-prepared complex was characterized by single-crystal X-ray structural analysis, powder X-ray diffraction (PXRD), and elemental analyses, which reveals that complex 1 shows a one-dimensional (1D) chain-like structure that is further extended to the 3D supermolecular network through H-bond and π-π interactions. Complex 1 was transformed to the nanoscale regime (ca. 190 nm) by mechanical grinding to yield the nano-1, maintaining its structure and crystallinity. Furthermore, the anticancer activity of the nano-1 toward the human neuroglioma cells (U251, U87, SHG-44, and A172) was evaluated via the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay.

Synthesis, spectral (FT-IR, 1H, 13C) studies, and crystal structure of [(2,6-CO2)2C5H3NSnBu2(H2O)]2·CHCl3

2021 ◽  
Vol 76 (2) ◽  
pp. 127-132
Author(s):  
Tidiane Diop ◽  
Adrienne Ndioléne ◽  
Mouhamadou Birame Diop ◽  
Mouhamadou Sembene Boye ◽  
Arie van der Lee ◽  
...  
Keyword(s):  
Title Complex ◽  
Dimeric Complex ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
Bridging Ligands ◽  
Triclinic Space Group ◽  
X Ray ◽  
Oxygen Donor ◽  
Elemental Analyses ◽  
Ft Ir

Abstract Di-n-butyltin(IV) 2,6-pyridinedicarboxylate [(2,6-CO2)2C5H3NSnBu2(H2O)]2·CHCl3, has been synthesized and characterized by elemental analyses, infrared and NMR (1H and 13C) spectroscopy, and single-crystal X-ray diffraction. The title complex crystallizes in the triclinic space group P 1 ‾ $P‾{1}$ ; with a = 9.2330(4), b = 10.4790(5), c = 20.2489(8) Å, α = 89.439(4), β = 87.492(3), γ = 85.888(4)°, V = 1951.96(15) Å3, and Z = 2. In this complex, the 2,6-pyridinedicarboxylate groups are tetradentate, chelating, and bridging ligands for the tin(IV) atoms. NMR spectra showed that the ligands bind to the tin(IV) center in the anionic (COO−) form. In the asymmetric unit of the dimeric complex, the monomer is composed of an n-Bu2Sn unit bonded to one 2,6-pyridinedicarboxylate group through one nitrogen and two oxygen donor atoms. It is also coordinated by a water molecule. In the dimer formed by carboxylate bridging, a trans-heptacoordinated geometry around the tin(IV) atom is established. The chloroform molecule is connected to the dimer by C–H···O contacts. Compound exhibits extended O–H···O and C–H···O hydrogen bonding networks leading to a supramolecular layer topology.

Examination of Rabbit Fc Crystals

1968 ◽  
Vol 26 ◽  
pp. 140-141
Author(s):  
J. P. Robinson ◽  
P. G. Lenhert
Keyword(s):  
Molecular Weight ◽  
Flat Plate ◽  
Phosphate Buffer ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Neutral Ph ◽  
Small Crystals ◽  
Carbon Coated ◽  
Diffraction Patterns

Crystallographic studies of rabbit Fc using X-ray diffraction patterns were recently reported. The unit cell constants were reported to be a = 69. 2 A°, b = 73. 1 A°, c = 60. 6 A°, B = 104° 30', space group P21, monoclinic, volume of asymmetric unit V = 148, 000 A°3. The molecular weight of the fragment was determined to be 55, 000 ± 2000 which is in agreement with earlier determinations by other methods.Fc crystals were formed in water or dilute phosphate buffer at neutral pH. The resulting crystal was a flat plate as previously described. Preparations of small crystals were negatively stained by mixing the suspension with equal volumes of 2% silicotungstate at neutral pH. A drop of the mixture was placed on a carbon coated grid and allowed to stand for a few minutes. The excess liquid was removed and the grid was immediately put in the microscope.

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