Synthesis, structure and spectroscopic properties of a novel compound bis(benzylamino)silver(I) benzylcarbamate

2012 ◽  
Vol 68 (4) ◽  
pp. 401-406
Author(s):  
Jianguo Liu ◽  
Xiaoyan Zeng ◽  
Hua Li
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Silver Oxide ◽  
Spectroscopic Properties ◽  
Amino Groups ◽  
Triclinic Crystal System ◽  
Carboxylate Groups ◽  
Silver Silver

A novel silver-containing compound, bis(benzylamino)silver(I) benzylcarbamate, with an unusual molecular structure is easily synthesized by the reaction of benzylammonium benzylcarbamate and silver oxide. It crystallizes in the triclinic crystal system with the space group P\bar 1 with a = 5.2006 (5), b = 14.6298 (15), c = 14.7246 (15) Å, α = 68.729 (2), β = 83.507 (2), γ = 85.412 (2)° and Z = 2. In the crystal, one Ag atom coordinates with the two amino groups in two benzylamine molecules, and there are no silver–silver and silver–oxygen interactions. The carboxylate groups take part in balancing the electric charge and forming hydrogen bonds. Both the compound and the starting material benzylammonium benzylcarbamate exhibit room-temperature solid-state emissions with the peaks at 300 and 406 nm, respectively.

scholarly journals Crystal structure of 8-hydroxyquinoline: a new monoclinic polymorph

2014 ◽  
Vol 70 (9) ◽  
pp. o924-o925 ◽  
Author(s):  
Raúl Castañeda ◽  
Sofia A. Antal ◽  
Sergiu Draguta ◽  
Tatiana V. Timofeeva ◽  
Victor N. Khrustalev
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Three Dimensional ◽  
Solvent Mixture ◽  
Acta Cryst ◽  
Space Group ◽  
Compound C ◽  
Centrosymmetric Dimers

In an attempt to grow 8-hydroxyquinoline–acetaminophen co-crystals from equimolar amounts of conformers in a chloroform–ethanol solvent mixture at room temperature, the title compound, C9H7NO, was obtained. The molecule is planar, with the hydroxy H atom forming an intramolecular O—H...N hydrogen bond. In the crystal, molecules form centrosymmetric dimersviatwo O—H...N hydrogen bonds. Thus, the hydroxy H atoms are involved in bifurcated O—H...N hydrogen bonds, leading to the formation of a central planar four-membered N2H2ring. The dimers are bound by intermolecular π–π stacking [the shortest C...C distance is 3.2997 (17) Å] and C—H...π interactions into a three-dimensional framework. The crystal grown represents a new monoclinic polymorph in the space groupP21/n. The molecular structure of the present monoclinic polymorph is very similar to that of the orthorhombic polymorph (space groupFdd2) studied previously [Roychowdhuryet al.(1978).Acta Cryst.B34, 1047–1048; Banerjee & Saha (1986).Acta Cryst.C42, 1408–1411]. The structures of the two polymorphs are distinguished by the different geometries of the hydrogen-bonded dimers, which in the crystal of the orthorhombic polymorph possess twofold axis symmetry, with the central N2H2ring adopting a butterfly conformation.

Crystal and Molecular Structure of 3-(N-Methoxy-N-methylcarbamoyl)- 2,2,5,5-tetramethyl-1-oxy-pyrroline

2010 ◽  
Vol 65 (4) ◽  
pp. 475-478
Author(s):  
Guido D. Frey ◽  
Eberhardt Herdtweck
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Crystal And Molecular Structure ◽  
Layer Structure ◽  
Nitroxide Radical ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
Stable Nitroxide

The crystal structure of the stable nitroxide radical 3-(N-methoxy-N-methylcarbamoyl)-2,2,5,5- tetramethyl-1-oxy-pyrroline was determined from single-crystal X-ray data: orthorhombic, space group Pbca (no. 61), a = 9.0213(1), b = 12.8625(1), c = 21.2406(2) Å, V = 2464.68(4) Å3 and Z = 8. The adjacent molecules assemble to a supramolecular layer structure in the solid state, linked by two intermolecular C-H...O hydrogen bonds.

Mixed Linker Strategy for the Construction of a Fluorescent 2D Network Based on [Ag2(COO)2] as Secondary Building Unit

2013 ◽  
Vol 68 (4) ◽  
pp. 357-361 ◽  
Author(s):  
Di Sun ◽  
Shuai Yuan ◽  
Shan-Shan Liu ◽  
Ya-Qin Zhao ◽  
Lu-Lu Han ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Tetrahedral Coordination ◽  
Secondary Building Unit ◽  
Ultrasound Assisted ◽  
A Chain ◽  
2D Network ◽  
Distorted Tetrahedral Coordination

The ultrasound-assisted reaction of AgNO3, 2-amino-4,6-dimethylpyrimidine (dmapym) and 2,6-naphthalenedicarboxylic acid (H2npd) gave rise to a new 2D network of the formula [Ag2(dmapym)2(npd)]n (1). The atoms Ag1 and Ag2 in the complex show seesaw and distorted tetrahedral coordination geometries, respectively. The dmapym ligand acts as a bidentate bridge to bind paired Ag(I) ions into a chain. The chains are further connected by npd linkers to form the resultant 2D network reinforced by N-H···O hydrogen bonds between dmapym and npd. Weak C-H···p interactions are also found in the crystal structure. Complex 1 exhibits photoluminescence in the solid state at room temperature with an emission maximum at 418 nm upon excitation at 330 nm.

A Zigzag Chain Cd (II) Coordination Polymer Based on 2,4-Dinitro-benzoic Acid Ligand: Syntheses, Structure and Photoluminescence

2014 ◽  
Vol 997 ◽  
pp. 140-145
Author(s):  
Hui Bai ◽  
Hong Gao ◽  
Ming Hu
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Benzoic Acid ◽  
Room Temperature ◽  
Chain Structure ◽  
Zigzag Chain ◽  
Photoluminescent Property ◽  
X Ray ◽  
Acid Ligand ◽  
Carboxylate Groups

The coordination polymer, namely, [Cd (L)2(phen)]n (1) (HL=2,4-dinitro-benzoic acid, phen=1,10-phenanthroline) has been hydrothermally synthesized. Compound 1 was structurally characterized by IR spectra, thermogravimetric analysis and single-crystal X-ray diffractions. The carboxylate groups of L- adopt the bridging monodentate and bidentate modes to link two Cd2+ ions, resulting in a 1-D zigzag chain structure. The solid state photoluminescent property of 1 has been investigated at room temperature.

A two-dimensional layered CdIIcoordination polymer with a three-dimensional supramolecular architecture incorporating mixed multidentateN- andO-donor ligands

2015 ◽  
Vol 71 (6) ◽  
pp. 474-478 ◽  
Author(s):  
Qiu-Ying Huang ◽  
Ming-Yang Su ◽  
Xiang-Ru Meng
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Three Dimensional ◽  
Fluorescence Emission ◽  
Good Choice ◽  
Donor Ligands ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Carboxylate Groups ◽  
Metal Organic

The combination of N-heterocyclic and multicarboxylate ligands is a good choice for the construction of metal–organic frameworks. In the title coordination polymer, poly[bis{μ2-1-[(1H-benzimidazol-2-yl)methyl]-1H-tetrazole-κ2N3:N4}(μ4-butanedioato-κ4O1:O1′:O4:O4′)(μ2-butanedioato-κ2O1:O4)dicadmium], [Cd(C4H4O4)(C9H8N6)]n, each CdIIion exhibits an irregular octahedral CdO4N2coordination geometry and is coordinated by four O atoms from three carboxylate groups of three succinate (butanedioate) ligands and two N atoms from two 1-[(1H-benzimidazol-2-yl)methyl]-1H-tetrazole (bimt) ligands. CdIIions are connected by two kinds of crystallographically independent succinate ligands to generate a two-dimensional layered structure with bimt ligands located on each side of the layer. Adjacent layers are further connected by hydrogen bonding, leading to a three-dimensional supramolecular architecture in the solid state. Thermogravimetric analysis of the title polymer shows that it is stable up to 529 K and then loses weight from 529 to 918 K, corresponding to the decomposition of the bimt ligands and succinate groups. The polymer exhibits a strong fluorescence emission in the solid state at room temperature.

Influence of Anions on the Self-assembly of Cd(II)-containing Coordination Polymers Based on the Flexible Ligand 2-((1H-1,2,4-Triazol-1-yl)methyl)-1H-benzimidazole

2012 ◽  
Vol 67 (1) ◽  
pp. 29-35
Author(s):  
Guanghua Jin ◽  
Yang Yang ◽  
Xiaoli Zhou ◽  
Xiangru Meng
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Coordination Polymers ◽  
Infrared Spectra ◽  
Self Assembly ◽  
Room Temperature ◽  
Luminescent Properties ◽  
The Self ◽  
Stacking Interactions ◽  
Flexible Ligand

Three Cd(II)-containing coordination polymers [CdCl2(tmb)]n (1) and two polymorphs of {[CdI2(tmb)]·DMF}n (2, 3) (tmb = 2-((1H-1,2,4-triazol-1-yl)methyl)-1H-benzimidazole) have been synthesized by the reactions of tmb with the cadmium salts. Polymer 1 exhibits an infinite · · ·Cd- (Cl1)2-Cd-(Cl2)2-Cd· · · chain with μ2Cl bridges, while polymers 2 and 3 are isomers, in which the Cd(II) ions are bridged by the bidentate tmb ligands leading to · · ·Cd-tmb-Cd· · · chains. The polymers form 3-D supramolecular frameworks through hydrogen bonds and π · · ·π stacking interactions. The different structures of polymers 1 - 3 indicate that the anions and the flexibility of the tmb ligand can influence the structures of the coordination polymers. The infrared spectra and luminescent properties of the polymers have been investigated in the solid state at room temperature

A new one-dimensional ZnIIcoordination polymer based on 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate

2015 ◽  
Vol 71 (11) ◽  
pp. 1017-1021 ◽  
Author(s):  
Qiu-Ying Huang ◽  
Wei Liu ◽  
Yi Yang ◽  
Xiang-Ru Meng
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Layered Structure ◽  
Heterocyclic Compounds ◽  
Room Temperature ◽  
Dimensional Chain ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
One Dimensional

Multidentate N-heterocyclic compounds form a variety of metal complexes with many intriguing structures and interesting properties. The title coordination polymer,catena-poly[zinc(II)-bis{μ-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole}-κ2N3:N3′;N3′:N3-zinc(II)-bis(μ-benzene-1,2-dicarboxylato)-κ2O1:O2;κ3O1,O1′:O2], [Zn2(C8H4O4)2(C11H10N4)2]n, has been synthesized by the reaction of Zn(NO3)2with 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) and benzene-1,2-dicarboxylic acid (H2bdic) under hydrothermal conditions. There are two crystallographically distinct imb ligands [imb(A) and imb(B)] in the structure which adopt very similar coordination geometries. The imb(A) ligand bridges two symmetry-related Zn1 ions, yielding a binuclear [(Zn1)2{imb(A)}2] unit, and the imb(B) ligand bridges two symmetry-related Zn2 ions resulting in a binuclear [(Zn2)2{imb(B)}2] unit. The above-mentioned binuclear units are further connected alternately by pairs of bridging bdic2−ligands, forming an infinite one-dimensional chain. These one-dimensional chains are further connected through N—H...O hydrogen bonds, leading to a two-dimensional layered structure. In addition, the title polymer exhibits good fluorescence properties in the solid state at room temperature.

Synthesis, Structure and Photoluminescent Properties of Zn(II) -Complex with 2,4,6-tris-(benzimidazolyl-2-yl)pyridine Ligand

2011 ◽  
Vol 239-242 ◽  
pp. 2997-3000
Author(s):  
Cui Jin Li ◽  
Guo Qiang Yin ◽  
Qing Bing Guo ◽  
Hong Mei Hang ◽  
Xin Hua Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Room Temperature ◽  
Hydrothermal Reaction ◽  
Mixed Solvents ◽  
Three Dimensional ◽  
Fluorescent Properties ◽  
Pyridine Ligand ◽  
Supramolecular Networks ◽  
Photoluminescence Studies

This hydrothermal reaction of tridentate rigid 2,4,6-tris-(benzimidazolyl-2-yl)pyridine (pytbzim) ligand, linear bridging 4,4′-bipyridine (4,4′-bpy) ligand and Zn(II) salts in acetonitrile and water mixed solvents generates a new complex {[Zn3I6(4,4′-bpy)(pytbzim)3].(H2O)2.(CH3CN)}n. The asymmetry unit of complex contains a [ZnI2(pytbzim)] and a {[Zn2I2(4,4′-bpy)2(pytbzim)2] units, which further construct into a three-dimensional supramolecular networks through p-p stacking interaction and rich hydrogen bonds between units and solvents. The solid state photoluminescence studies reveal good fluorescent properties of the pytbzim ligand and Zn(II)-complex at room temperature.

Molekül-und Kristallstruktur des 5.5' -Diethoxycarbonyl-3.3' -diethyl-4.4' -dimethyl-pyrromethen-hydrobromids / Crystal and Molecular Structure of 5,5'-Diethoxycarbonyl-3,3'-diethyl-4,4'-dimethyl-pyirromethene Hydrobromide

1978 ◽  
Vol 33 (7) ◽  
pp. 753-755 ◽  
Author(s):  
G. Struckmeier ◽  
J. Engel ◽  
U. Thewalt
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Ion Pairs ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cell Dimensions

Abstract The crystal and molecular structure of the title compound has been determined by X-ray diffraction. The compound possesses an (almost) planar Z configuration. The ions form ion pairs in the solid state: each bromide anion is connected via two hydrogen bonds with a cation. The crystal data are: space group P21/n with Z = 4; cell dimensions a = 14.097(2), b = 11.591(2), c = 14.133(3) Å, β = 106,22(2)°.

Syntheses, Structures, and Spectroscopic Properties of Alkoxide, Hydroxide, and Siloxide Complexes with (η3-Allyl)Mo Moieties

1999 ◽  
Vol 54 (4) ◽  
pp. 473-481 ◽  
Author(s):  
Cornelia Borgmann ◽  
Christian Limberg ◽  
László Zsolnai ◽  
Katja Heinze
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Single Crystal ◽  
Nmr Spectra ◽  
Room Temperature ◽  
2D Nmr ◽  
Spectroscopic Properties ◽  
State Structure ◽  
X Ray ◽  
2D Nmr Spectra

Salts with binuclear anions of the general formula [(η3-C3H4R)(CO)2Mo(μ-OR′)2(μ-OR″)-Mo(CO)2(η3-C3H4R)]- (R = h , R′, R″ = Me, 2 ; R = CH3, R′ = CH(CH3)2, R″ = OH, 3; R = CH3, R′ = OH, R″ = OSiMe3, 4) have been synthesised via reaction of [(η3-C3H4R)- Mo(CO)2(CH3CN)2(thf)]+BF4- , 1, with NaOMe, NaOiPr, and KOSiMe3. All products were characterised spectroscopically and investigated by single crystal X-ray analysis. In the case of 3 low temperature 2D-NMR spectra revealed that the solid state structure is maintained in solution and that the compound shows a trigonal twist-rearrangement at room temperature.

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