Synthesis and Characterisation of Zinc(II) Complex With 2-Amino-5-bromopyridine Ligand

Visible Absorption ◽

X Ray ◽

X Ray Crystallography ◽

Uv Visible ◽

Cl Atoms ◽

The synthesis and characterisation of zinc(II) complex with 2-amino-5-bromopyridine (C5H5BrN2) ligand have been described. The complex was structurally characterised via X-ray crystallography, in the title compound, (2-amino-5-bromopyridinium) [ZnCl¬3(2-amino-5-bromopyridine)] or which is also called (C5H6BrN2) [ZnCl3(C5H5BrN2)]¬. The Zn(II) atom is four-coordinated by three Cl atoms and one imine N-atom of 2-amino-5-bromopyridine ligand, forming a distorted tetrahedral coordination geometry. The complex was also investigated by elemental analysis, 1H NMR, IR spectroscopy and UV-Visible absorption. The protonation behaviour upon coordination is discussed.

Bis[μ-1,3-bis(1H-imidazol-1-yl)propane-κ2N3:N3′]bis(dichloridozinc) dihydrate

Acta Crystallographica Section E Structure Reports Online ◽

10.1107/s1600536814008162 ◽

2014 ◽

Vol 70 (5) ◽

pp. m184-m184

Author(s):

Xiao-Juan Wang ◽

Yun-Long Feng

Keyword(s):

Zinc Complex ◽

Complex Molecule ◽

Dimensional Structure ◽

Water Molecules ◽

Coordination Geometry ◽

Lattice Water ◽

Bridging Ligand ◽

Cl Atoms ◽

The title hydrated complex, [Zn2Cl4(C9H12N4)2]·2H2O, is a discrete dinuclear zinc complex with 1,3-bis(1H-imidazol-1-yl)propane as the bridging ligand. The complex molecule lies about a crystallographic inversion centre. The ZnIIatom exhibits a distorted tetrahedral coordination geometry defined by two imidazole N atoms and two Cl atoms. O—H...Cl hydrogen bonding between the lattice water molecules and the terminal Cl atoms of the molecule lead to a two-dimensional structure extending parallel to (100).

Synthesis, characterization, and X-ray structural analysis of the Cu(I) derivative, [Me2Ga(OCH2CH2NMe2)N2C5H7]Cu• PPh3

Canadian Journal of Chemistry ◽

10.1139/v81-072 ◽

1981 ◽

Vol 59 (3) ◽

pp. 518-523 ◽

Cited By ~ 5

Author(s):

Kenneth S. Chong ◽

Steven J. Rettig ◽

Alan Storr ◽

James Trotter

Keyword(s):

Structural Analysis ◽

Copper Atom ◽

Direct Methods ◽

Carbonyl Complex ◽

Coordination Geometry ◽

Full Matrix ◽

X Ray ◽

Complex Crystals ◽

The Cu(I) complex [Me2Ga(OCH2CH2NMe2)N2C5H7]Cu•PPh3 has been synthesized and its fluxional behavior in solution probed. Attempts have been made to isolate the analogous Cu(I) carbonyl complex. Crystals of [dimethyl(3,5-dimethyl-1-pyrazolyl)(N,N-dimethylethanolamino)gallato (N(2),O,N(3))](triphenylphosphine)copper(I) are monoclinic, a = 18.871(2), b = 9.464(1), c = 18.374(2) Ā, β = 109.62(1)°, Z = 4, space group P21/c. The structure was solved by direct methods and was refined by full-matrix least-squares procedures to R = 0.028 and Rw = 0.035 for 2729 reflections with I ≥ 3σ(I). The copper atom is bonded to the phosphine and to the tridentate Me2Ga(OCH2CH2NMe2)N2C5H7− ligand resulting in a distorted tetrahedral coordination geometry. The Cu—P distance of 2.156(1) Å is unusually short. Other important bond distances (corrected for libration) are: Cu—O, 2.163(2), Cu—N(pyrazolyl), 2.025(3), Cu—N(amino), 2.144(3), Ga—O, 1.896(3), Ga—N, 2.005(3), and Ga—C, 1.972(5) and 1.987(5) Å.

A new modification of [Ag4Br4(PPh3)4]: synthesis, structure and properties

Zeitschrift für Naturforschung B ◽

10.1515/znb-2018-0113 ◽

2018 ◽

Vol 73 (10) ◽

pp. 733-738 ◽

Cited By ~ 1

Author(s):

Xintong Han ◽

Shanshan Mao ◽

Chuang Li ◽

Kesheng Shen ◽

Xinkui Shi ◽

...

Keyword(s):

Solid State ◽

Ir Spectroscopy ◽

Hydrogen Bonds ◽

Elemental Analysis ◽

Supramolecular Structure ◽

Chair Conformation ◽

Cyclic Voltammograms ◽

Structure And Properties ◽

X Ray ◽

X Ray Crystallography

AbstractA new modification of the homometallic silver(I) cluster [Ag4Br4(PPh3)4] has been prepared and characterized by elemental analysis, UV/Vis and IR spectroscopy, and X-ray crystallography. The tetramer shows a polycyclic structure with a chair conformation. The bromine atoms adopt μ2- and μ3-bridging modes. The shortest Ag–Ag distance in the cluster is 3.159(2) Å, which indicates significant Ag–Ag interactions. A supramolecular structure is arranged by hydrogen bonds (C–H···Br). Cyclic voltammograms of the cluster indicate a quasi-reversible Ag+/Ag couple. The fluorescence properties of the ligand and the Ag(I) cluster were studied in the solid state. The emission peaks of the Ag(I) cluster are attributed to ligand-centered luminescence.

Retention of (4,4) Connectivity in the Absence of π…π Interactions in a Cadmium tris-Dicyanamide Compound

Australian Journal of Chemistry ◽

10.1071/ch05315 ◽

2006 ◽

Vol 59 (2) ◽

pp. 115 ◽

Cited By ~ 12

Author(s):

Moumita Biswas ◽

Stuart R. Batten ◽

Paul Jensen ◽

Samiran Mitra

Keyword(s):

Thermogravimetric Analysis ◽

Ir Spectroscopy ◽

Powder Diffraction ◽

Elemental Analysis ◽

Octahedral Geometry ◽

X Ray ◽

Π Interactions ◽

X Ray Crystallography ◽

Extended Sheets

An anionic cadmium tris-dicyanamide compound (Et4N)[Cd(N(CN)2)3]·3/4H2O 1 has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, X-ray powder diffraction, and X-ray crystallography. The anions form extended sheets with retention of (4,4) connectivity in the absence of π···π interactions within the cation layers, and with octahedral geometry about individual CdII ions.

Preparation and Characterization of Macrocyclic Dinickel Complexes Coligated by Tetrazolate Ligands

Zeitschrift für Naturforschung B ◽

10.1515/znb-2008-0503 ◽

2008 ◽

Vol 63 (5) ◽

pp. 496-502 ◽

Cited By ~ 9

Author(s):

Vasile Lozan ◽

Sergei V. Voitekhovich ◽

Pavel N. Gaponik ◽

Oleg A. Ivashkevich ◽

Berthold Kersting

Keyword(s):

Ir Spectroscopy ◽

Elemental Analysis ◽

X Ray ◽

X Ray Crystallography

The dinuclear nickel(II) complex [Ni2LCl]+ (1), where (L)2− represents a 24-membered macrocyclic hexamine-dithiophenolate ligand, reacts readily with 5-R-tetrazolate ligands to give the complexes [Ni2L(RCN4)]+, where R = H (2), Me (3), Ph (4). The new complexes were either isolated as perchlorate or tetraphenylborate salts and fully characterized by elemental analysis, UV/Vis, and IR spectroscopy. The structures of 2[BPh4] · MeCN, 3[BPh4] · 2MeCN, and 4[BPh4] ·MeCN were determined by X-ray crystallography, showing that all tetrazolate units are in a 2,3-bridging mode to generate dioctahedral N3Ni(μ-S)2(μ-N4CR)NiN3 core structures. The RCN4− groups interact less strongly with the [Ni2L]2+ fragment than pyrazolate ligands (CH)3N2 − as reflected in the longer Ni-N distances.

Crystal structure of an oxalate-bridged tetranuclear 8-hydroxyquinoline Zn(II) cluster: [Zn4Q6(Ox)]0.5n

Journal of the Serbian Chemical Society ◽

10.2298/jsc100822049w ◽

2011 ◽

Vol 76 (4) ◽

pp. 529-537 ◽

Cited By ~ 4

Author(s):

Jiajun Wang ◽

Qiang Wang ◽

Yanjun Sun ◽

Yuemei Wang ◽

Guosheng Zhao ◽

...

Keyword(s):

Crystal Structure ◽

Thermal Analysis ◽

Ir Spectroscopy ◽

Elemental Analysis ◽

Chain Structure ◽

Stacking Interactions ◽

Monoclinic System ◽

X Ray ◽

X Ray Crystallography ◽

Polymeric Chains

The chain structure of a tetranuclear zinc(II) cluster [Zn4Q6(Ox)]0.5n ([Zn4 (C9H6NO)6(C2O4)]0.5n) (1) (Q = 8- hydroxyquinoline anion, Ox = oxalate dianion) was determined by X-ray crystallography and characterized by elemental analysis, IR spectroscopy and thermal analysis. It crystallizes in the monoclinic system, space group P21/n (No. 14), with the lattice parameters a = 13.2222(15) ?, b = 11.0566(12) ?, c = 16.2224(18) ?, ? = 92.1770(10)?, V = 2369.9(5) ?3, Z = 4, Mr = 607.23 g mol-1, Dc = 1.702 g cm-3. The tetranuclear zinc(II) clusters form 1D polymeric chains parallel to the b-axis. The ?-? stacking interactions involving aryl rings support the formation of the 1D polymeric structure. The neighboring polymeric chains are connected by C-H???? interactions.

Synthesis and structure of the mercury chloride complex of 2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole)

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989017001888 ◽

2017 ◽

Vol 73 (3) ◽

pp. 341-344 ◽

Cited By ~ 5

Author(s):

Varsha Rani ◽

Harkesh B. Singh ◽

Ray J. Butcher

Keyword(s):

Metal Cation ◽

Chloride Complex ◽

Mercury Chloride ◽

Coordination Geometry ◽

Bond Angles ◽

Axis Direction ◽

Tert Butyl ◽

Cl Atoms ◽

In the title mercury complex,catena-poly[[dichloridomercury(II)]-μ-2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole)-κ2N3:N3′], [HgCl2(C26H25BrN4)]n, the HgIIatom is coordinated by two Cl atoms and by two N atoms from two 2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole) ligands. The metal cation adopts a distorted tetrahedral coordination geometry with with bond angles around mercury of 100.59 (15)° [N—Hg—N] and 126.35 (7)° [Cl—Hg—Cl]. This arrangement gives rise to a zigzag helical 1-D polymer propagating along theb-axis direction.

Thiophenophane–metal complexes. I. Preparation, X-ray structure, and cyclic voltammetry of 2,5,8-trithia[9](2,5)thiophenophane, L, and of its metalcomplexcation bis(2,5,8-trithia[9](2,5)thiophenophane-S2,S3]copper(I),[CuL2]+1

Canadian Journal of Chemistry ◽

10.1139/v88-243 ◽

1988 ◽

Vol 66 (6) ◽

pp. 1506-1512 ◽

Cited By ~ 20

Author(s):

C. Robert Lucas ◽

Liu Shuang ◽

Michael J. Newlands ◽

Jean-Pierre Charland ◽

Eric J. Gabe

Keyword(s):

Cyclic Voltammetry ◽

Reference Electrode ◽

Molecular Structures ◽

Saturated Calomel Reference Electrode ◽

Coordination Geometry ◽

Space Group ◽

X Ray ◽

H Nmr ◽

Preparation of the thiophenophane C10H14S4, (L), and syntheses of its copper(I) complex [CuL2]ClO4 or [CuL2]BF4 are described. The 13C and 1H nmr spectra of L and the ir spectra (4000–200 cm−1) of [CuL2]ClO4 and [CuL2]BF4 are reported. The molecular structures of L and [CuL2]ClO4 have been determined. For L: space group P21/a, a = 7.9347(2) Å, b = 18.7479(3) Å, c = 8.8596(2) Å, β = 108.446(2)°, Z = 4, Rf = 0.048, and Rw = 0.034. For [CuL2]ClO4: space group P21/c, a = 9.4363(1) Å, b = 18.2768(3) Å, c = 16.2157(3) Å, β = 96.520(2)°, Z = 4, Rf = 0.056, and Rw = 0.037. The Cu(I) complex has distorted tetrahedral coordination geometry; its perchlorate anion is non-coordinating and disordered. The Cu—S bond lengths lie in the range 2.301–2.392 Å and the S—Cu—S angles in the range 92.43—150.26°. Cyclic voltammetry of [CuL2]ClO4 (10−3 mol/L in dimethylsulfoxide, 0.1 mol/L Et4NClO4, glassy carbon working electrode, platinum counter electrode, aqueous saturated calomel reference electrode against which the ferrocenium/ferrocene potential under similar conditions was 400 mV) shows a quasi-reversible oxidation (E1/2 = 0.150 V, ΔEp = 170 mV at 50 mV/s). Thiophene's effect as a sub-unit in a small macrocycle upon properties of the latter is discussed.

A Fe(bipy)2 Unit Fused to a Keggin Polyoxotungstate Anion

Australian Journal of Chemistry ◽

10.1071/ch09437 ◽

2010 ◽

Vol 63 (2) ◽

pp. 252 ◽

Cited By ~ 5

Author(s):

Jingli Xie ◽

Ryan Gilbert-Wilson ◽

Boujemaa Moubaraki ◽

Keith S. Murray ◽

Anthony G. Wedd

Keyword(s):

Hydrothermal Synthesis ◽

Ir Spectroscopy ◽

Single Crystal ◽

Hybrid Materials ◽

Elemental Analysis ◽

X Ray ◽

X Ray Crystallography ◽

Nmr Spectrometry ◽

Ft Ir ◽

Ft Ir Spectroscopy

Two new hybrid materials [Fe(bipy)3]3[ZnW12O39(OH)Fe(bipy)2(H2O)]2 and [Fe(bipy)3]2[CoW12O40] were obtained by hydrothermal synthesis. They contain [Fe(bipy)3] n+ (bipy = 2,2′-bipyridyl; n = 2 or 3) cations and Keggin-type polyoxotungstate anions. Both have been characterized by elemental analysis, FT-IR spectroscopy, 1H-NMR spectrometry, and single crystal X-ray crystallography. The anion in the former salt features [FeII(bipy)2(OH2)]2+ units covalently bound via a W=O-Fe bridge to the protonated anion [ZnW12O39(OH)]5–. The latter salt contains discrete [CoW12O40]6– anions.

Hydrothermal Synthesis, Crystal Structure and Properties of a Novel 3D Metal-Organic Cd(II) Coordination Polymer Based on Helical Units

Zeitschrift für Naturforschung B ◽

10.5560/znb.2013-2238 ◽

2013 ◽

Vol 68 (2) ◽

pp. 127-132

Author(s):

Hai-Hua Li ◽

Peng Zhang ◽

Jia-Yi Pu ◽

Yu-Ying Zhao ◽

Chong-Zhen Mei

Keyword(s):

Crystal Structure ◽

Hydrothermal Synthesis ◽

Ir Spectroscopy ◽

Coordination Polymer ◽

Elemental Analysis ◽

Metal Organic Framework ◽

Structure And Properties ◽

X Ray ◽

X Ray Crystallography ◽

Metal Organic

A metal-organic framework based on 4-methylphthalic acid (H2L) and 4,4’-bipyridine (bpy), namely {[Cd(L)(bpy)1:5]·2(H2O)}n (1), has been synthesized hydrothermally and characterized by IR spectroscopy, elemental analysis, thermogravimetry, and single-crystal X-ray crystallography. Complex 1 exhibits a 3D coordination network based on layers. Each layer consists of left- or right-handed {Cd-L-Cd-bpy-Cd-L-Cd-bpy}n double helices.Water molecules are also incorporated in the network. Compound 1 shows fluorescence at ca. 360 nm upon excitation at 304 nm.