Preparation and Characterization of Macrocyclic Dinickel Complexes Coligated by Tetrazolate Ligands

2008 ◽  
Vol 63 (5) ◽  
pp. 496-502 ◽  
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.

scholarly journals Synthesis and Characterization of Bidentate Isonitrile Iron Complexes

2021 ◽  
Author(s):  
Marion Till ◽  
John A. Kelly ◽  
Christoph G. P. Ziegler ◽  
Robert Wolf ◽  
Tianao Guo ◽  
...  
Keyword(s):  
New Species ◽  
Ir Spectroscopy ◽  
Iron Complexes ◽  
Molecular Structures ◽  
Synthesis And Characterization ◽  
Carbonyl Complexes ◽  
Subsequent Reduction ◽  
X Ray ◽  
X Ray Crystallography

Divalent iron complexes trans-[FeBr2(BINC)2], [Cp*FeCl(BINC)] (Cp* = Me5C5) and [FeBr2(CNAr3NC)2] with chelat-ing bis(isonitrile) ligands BINC (bis(2-isocyanophenyl)phenylphosphonate) and CNAr3NC (2,2’’-diisocyano-3,5,3’’,5’’tetramethyl-1,1’:3’,1’’-terphenyl) have been prepared and characterized. Their subsequent reduction yields di- and trinuclear compounds [Fe3(BINC)6], [Cp*Fe(BINC)]2, [Fe(CNAr3NC)2]2 and [K(Et2O)]2[Fe(CNAr3NC)2]2. The molecular structures of all new species were determined by X-ray crystallography. The molecular structures are compared to related iron carbonyl complexes. The complexes were further characterized by NMR and IR spectroscopy, and the electrochemical properties of selected compounds were analyzed by UV-Vis-NIR spectroelectrochemistry. <br>

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

2017 ◽  
Author(s):  
Fitriani
Keyword(s):  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Visible Absorption ◽  
X Ray ◽  
X Ray Crystallography ◽  
Uv Visible ◽  
Cl Atoms ◽  
Distorted Tetrahedral Coordination

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.

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

2018 ◽  
Vol 73 (10) ◽  
pp. 733-738 ◽  
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

2006 ◽  
Vol 59 (2) ◽  
pp. 115 ◽  
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.

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

2011 ◽  
Vol 76 (4) ◽  
pp. 529-537 ◽  
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.

scholarly journals Thermal decomposition and stability in a series of heterobimetallic carbonyl compounds of the type [Fe(CO)4(HgX)2] (X=Cl, Br, I)

2000 ◽  
Vol 25 (0) ◽  
pp. 89-95 ◽  
Author(s):  
José Roberto ZAMIAN ◽  
Antonio Eduardo MAURO ◽  
Carolina Coimbra NUNES ◽  
Eduardo Tonon DE ALMEIDA
Keyword(s):  
Thermal Decomposition ◽  
Ir Spectroscopy ◽  
Thermal Behaviour ◽  
Elemental Analysis ◽  
Carbonyl Compounds ◽  
Thermal Stabilities ◽  
X Ray ◽  
Metal Metal ◽  
Metal Bonds

Heterobimetallic carbonyl compounds of the type [Fe(CO)4(HgX)2] (X= Cl, Br, I), which have metal-metal bonds, have been prepared in order to study their thermal stabilities as a function of the halogen coordinated to mercury atoms. The characterization of the above complexes was carried out by elemental analysis, IR and NMR spectroscopies. Their thermal behaviour has been investigated and the final product was identified by IR spectroscopy and by X-ray powder diffractogram.

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

2010 ◽  
Vol 63 (2) ◽  
pp. 252 ◽  
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

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.

scholarly journals Synthesis and Characterization of a Thiocyanate Bridged Dinuclear Cu(II) Complex Containing Macrocyclic Ligand Derived from Pyridine-2, 6-dicarboxaldehyde and 1, 2-bis(2-aminoethoxy) Ethane

2012 ◽  
Vol 36 (1) ◽  
pp. 89-96
Author(s):  
Md Mahbubul Alam ◽  
Faisal Ahmed ◽  
Rockshana Begum ◽  
Mizanur Rahman ◽  
Iqbal Ahmed Siddiquey ◽  
...  
Keyword(s):  
Schiff Base ◽  
Spectral Data ◽  
Elemental Analysis ◽  
Macrocyclic Ligand ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Esi Ms ◽  
X Ray Crystallography ◽  
Academy Of Sciences

The cyclic (2+2) template condensation of pyridine-2,6-dicarboxaldehyde with 1,2-Bis(2- aminoethoxy) ethane using Pb(SCN)2 gave dinuclear lead (II) complex, Pb2L1(SCN)4 where L1 is a tetra-Schiff-base macrocycle. The transmetallation treatment of Pb2L1(SCN)4 with Cu(ClO4)2.6H2O yield the complex, [Cu2L1(SCN)3(ClO4)] which has been characterized by elemental analysis, IR, ESI-MS spectroscopy and X-ray crystallography. On the basis of spectral data, different geometry of Cu2+ has been suggested. DOI: http://dx.doi.org/10.3329/jbas.v36i1.10924 Journal of Bangladesh Academy of Sciences, Vol. 36, No. 1, 89-96, 2012

Hydrothermal Synthesis and Structure of Two 1-D Organic HybridMetal Sulfates

2011 ◽  
Vol 66 (11) ◽  
pp. 1127-1130
Author(s):  
Xing Liu ◽  
Jian Zhou ◽  
Feilong Hu ◽  
Weijin Yuan ◽  
Zhiwei Huang
Keyword(s):  
Hydrothermal Synthesis ◽  
Thermogravimetric Analysis ◽  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
X Ray ◽  
X Ray Crystallography ◽  
Complex Copper

Two new complex copper(II) sulfates [Cu(1,10-phen)(H2O)2]SO4 (1, 1,10-phen = 1,10-phenanthroline) and [Cu(2,2′-bipy)(H2O)2]SO4 (2, 2,2′-bipy = 2,2′-bipyridine) have been hydrothermally synthesized and characterized by IR spectroscopy, elemental analysis, thermogravimetric analysis, and X-ray crystallography. 1 and 2 consist of complex cations [Cu(1,10-phen/2,2′-bipy)(H2O)2]2+ and SO42− anions, which are interconnected via weak Cu・ ・ ・O interactions to form rare examples of 1-D metal sulfates

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