X-ray diffraction study of copper(II) hexafluoroacetylacetonato-benzoylacetonate, Cu(HFA-BA), a mixed ligand complex

1989 ◽  
Vol 38 (6) ◽  
pp. 1285-1287 ◽  
Author(s):  
S. A. Gromilov ◽  
P. A. Stabnikov ◽  
I. A. Baidina
Keyword(s):  
Diffraction Study ◽  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
X Ray Diffraction ◽  
Ligand Complex ◽  
X Ray

Synthesis and Structural Characterization of the Mixed Ligand Complex [Cu(Hml)2(Phen)] · 2 H2O (H2ml = 2-Methyllactic Acid)

2003 ◽  
Vol 58 (1) ◽  
pp. 151-154 ◽  
Author(s):  
Rosa Carballo ◽  
Berta Covelo ◽  
Ezequiel M. Vázquez-Lópeza ◽  
Alfonso Castiñeiras ◽  
Juan Niclós
Keyword(s):  
Magnetic Measurements ◽  
Mixed Ligand Complex ◽  
Three Dimensional ◽  
Mixed Ligand ◽  
Water Molecules ◽  
Ligand Complex ◽  
X Ray ◽  
Dimensional Network ◽  
Distorted Octahedral

Abstract A new mixed-ligand complex of copper(II) with 1,10-phenanthroline and 2-methyllactate was prepared. [Cu(HmL)2(phen)] ·2H2O (where HmL = monodeprotonated 2-methyllactic acid) was characterized by elemental analysis, IR, electronic and EPR spectroscopy, magnetic measurements at room temperature, thermogravimetric analysis and X-ray diffractometry. The copper atom is in a tetragonally distorted octahedral environment and the 2-methyllactato ligand is bidentately chelating. The presence of lattice water molecules mediates the formation of a three-dimensional network.

scholarly journals STRUCTURAL AND SPECTRAL STUDIES OF THE MIXED-LIGAND CATION COMPLEX OF LANTHANUM [Lа(L)2bipy2]BPh4 WITH CARBACYLAMIDOPHOSPHATE (CAPH) TYPE LIGAND AND 2,2'-BIPYRIDINE

2020 ◽  
pp. 15-19
Author(s):  
M. Struhatska ◽  
I. Olyshevets ◽  
V. Dyakonenko ◽  
V. Ovchynnikov ◽  
S. Shishkina ◽  
...  
Keyword(s):  
Mixed Ligand Complex ◽  
Structural Data ◽  
Mixed Ligand ◽  
Molar Ratio ◽  
Spectral Studies ◽  
Ligand Complex ◽  
Absorption Bands ◽  
X Ray ◽  
Phosphoryl Groups ◽  
Oxygen Atoms

A new cationic mixed-ligand complex [Lа(L)2bipy2]BPh4 (where L-= bis(N,N'-diethylamide)(N'-trichloroacetyl)-triamidophosphate anion, bipy = 2,2'-bipyridine) has been synthesized and studied by the means of IR, 1H NMR spectroscopy, thermogravimetric and X-ray structural analyses. Low-frequency shifts of the absorption bands of the carbonyl and phosphoryl groups of phosphorylated ligand in the IR spectra of the complex compared with similar absorption bands in the spectrum of "free" CAPh ligand are Δν(C = O) = 117 cm–1 and Δν(P = O) = 137 cm–1. The analysis of integral signal intensity in the investigated NMR spectra of coordination compounds [Lа(L)2bipy2]BPh4 indicates the molar ratio of ligand : bipyridine : tetraphenylborate anion as a 2:2:1, which corresponds to the proposed structure of the complexes. The compound has been obtained in monocrystalline form. The structure of the complex has been determined by X-ray structural analysis, its ionic structure was proved, and the coordination of two CAPh ligands through the oxygen atoms of the carbonyl and phosphoryl groups was confirmed. Based on the structural data, it was determined that the La3+ ion is octocoordinated (surrounded by four oxygen atoms from two chelated phosphoryl ligands and four nitrogen atoms from two 2,2'-bipyridine molecules). The coordination polyhedron of central ion is interpreted as a square antiprism. Complex cations and tetraphenylborate anions are connected both by electrostatic interaction and by weak intermolecular C – H ∙∙∙ π-contacts between phenyl substituents of BPh4- and molecules of 2,2'-bipyridine. It was established by thermogravimetric analysis that the complex [Lа(L)2bipy2]BPh4 obtained is thermally stable up to a temperature of 150 °C. Significant decomposition of the complex begins at a temperature of 150 °C, occurs in one stage and most intensively continues up to 300 °C. The total weight loss is 78 %.

Notizen: The Auration of Dimethylsulfide

1996 ◽  
Vol 51 (8) ◽  
pp. 1207-1209 ◽  
Author(s):  
Alexander Sladek ◽  
Hubert Schmidbaur
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Mixed Ligand Complex ◽  
Crystal Structure Analysis ◽  
Mixed Ligand ◽  
Ligand Complex ◽  
Decomposition Products ◽  
X Ray

Dimethylsulfide reacts with (triphenylphosphine) gold(I) trifluoromethanesulfonate to give quantitative yields of the mixed ligand complex [(Ph3P)Au(SMe2)]+O3SCF3- (1). The structure of compound 1 has been determined by an X-ray crystal structure analysis. The lattice contains independent anions and (monomeric) cations, which have a linear P-Au-S axis. Attempts to produce a binuclear. dicationic complex through addition of a second equivalent of [(Ph3P)Au]+ failed and lead to decomposition products including [(Ph3P)2Au]+O3SCF3-.

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