The preparation and structural characterisation of bis(N,N-diethylmonothiocarbamato)complexes of cadmium and of the novel tetrameric complex [Et4Zn4(OSCNEt2)2(NEt2)2]: two new bonding modes for the monothiocarbamato ligand

1998 ◽  
pp. 3839-3844 ◽  
Author(s):  
Mohammed Chunggaze ◽  
M. Azad Malik ◽  
Paul O’Brien ◽  
Andrew J. P. White ◽  
David J. Williams
Keyword(s):  
The Novel ◽  
Structural Characterisation ◽  
Tetrameric Complex

Displacement of benzene by an alkyne in a tetraosmium cluster; synthesis and structural characterisation of the novel cluster [H2Os4(CO)9(μ3-η2-Ph2C2)(η2-Ph2C2)]

1991 ◽  
Vol 405 (2) ◽  
pp. C22-C24 ◽  
Author(s):  
Hong Chen ◽  
Brian F.G. Johnson ◽  
Jack Lewis ◽  
Dario Braga ◽  
Fabrizia Grepioni ◽  
...  
Keyword(s):  
The Novel ◽  
Structural Characterisation

Preparation, structural characterisation, and magnetic properties of [Cu(men)2][Cu2Cd2Cl2(CN)6] (men = N-methylethane-1,2-diamine)

2013 ◽  
Vol 67 (4) ◽  
Author(s):  
Juraj Kuchár ◽  
Juraj Černák
Keyword(s):  
Dilute Hydrochloric Acid ◽  
Aqueous Ethanol ◽  
Three Dimensional ◽  
The Novel ◽  
Temperature Dependent ◽  
Ferromagnetic Interaction ◽  
Structural Characterisation ◽  
Men 2 ◽  
Cyanide Ligands ◽  
Ethanol System

AbstractThe novel complex [Cu(men)2][Cu2Cd2Cl2(CN)6] (I) was isolated from the aqueous-ethanol system containing CuCl2, men (men = N-methylethane-1,2-diamine) and K2[Cd(CN)4] in the presence of dilute hydrochloric acid and chemically and spectroscopically characterised. The crystal structure of I consists of [Cu2I(CN)6] and [Cd2Cl2(CN)6] building units bridged by cyanide ligands and forms a three-dimensional skeleton with cavities. [Cu(men)2]2+ cations in which two men ligands are chelated (mean Cu-N is 2.033(6) Å) are located in the cavities. The coordination polyhedron around the Cu(II) atoms is formed as a tetragonal bipyramidal by two weaker axial Cu-Cl bonds (2.8642(12) Å) with chlorido ligands from the skeleton. The Cu(I) and Cd(II) atoms in the skeleton exhibit tetra-(CuC4 chromophore) and penta-coordination (CdN3Cl2), respectively. The temperature-dependent susceptibility measurements indicate a Curie-Weiss-like behaviour and the presence of weak anti-ferromagnetic interaction.

scholarly journals Preparation and Structural Characterisation of a Tetrameric Complex Between 3-Butene-2-one and Copper(I) Chloride.

1986 ◽  
Vol 40a ◽  
pp. 194-199 ◽  
Author(s):  
Staffan Andersson ◽  
Mikael Håkansson ◽  
Susan Jagner ◽  
Martin Nilsson ◽  
Fabio Urso ◽  
...  
Keyword(s):  
Structural Characterisation ◽  
Tetrameric Complex

Synthesis and Structural Characterisation of Lithium, Zinc, and Aluminium Pyrazolate Complexes

2020 ◽  
Vol 73 (6) ◽  
pp. 520 ◽  
Author(s):  
Nazli E. Rad ◽  
Peter C. Junk ◽  
Glen B. Deacon ◽  
Ilya V. Taidakov ◽  
Jun Wang
Keyword(s):  
Hydrogen Bonding ◽  
Zinc Complex ◽  
Polymeric Compound ◽  
Coordination Modes ◽  
Structural Characterisation ◽  
Hexanuclear Complex ◽  
Tetrameric Complex

The reaction of nBuLi with 3,5-dimethylpyrazole (Me2pzH) in Et2O or tmeda/hexane (tmeda=N,N,N′,N′-tetramethylethane-1,2-diamine) and with 3,5-dimethyl-4-nitropyrazolate (Me2pzHNO2) in THF results in the formation of three structurally diverse lithium pyrazolates: namely an Et2O-solvated tetrameric complex [Li4(Me2pz)4(OEt2)4], bridged entirely with μ-η2:η1-pyrazolate bonding, a hexanuclear complex [Li6(Me2pz)6(tmeda)2] with four different coordination modes (μ-η1:η1, μ-η2:η1, μ3-η1:η2:η1 and μ3-η2:η2:η1), and a new polymeric compound [Li2(Me2pzNO2)2(thf)2]n, with [Li2(Me2pzNO2)2(thf)2] groups linked by –NO2 coordination. A mononuclear zinc complex [Zn(tBu2pz)2(tBu2pzH)2].1/2THF (tBu2pzH=3,5-di-tert-butylpyrazole) was prepared by reaction of tBu2pzH with ZnEt2, unidentate tBu2pz groups being stabilised by N–H⋯N hydrogen bonding. Treatment of 3,5-diphenylpyrazole (Ph2pzH) with trimethylaluminium (mole ratio 3:1) in THF led to the formation of dinuclear [AlMe2(μ-Ph2pz)]2.1/2THF.

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