METAL ISOTOPE EFFECT ON METAL-LIGAND VIBRATIONS: V. CIS AND TRANS Ni(II) PHOSPHINE-HALIDE COMPLEXES

Autor:	Kazuo Nakamoto, Carl Udovich, James Takemoto
Rok vydání:	1971
Předmět:	Ligand Inorganic chemistry Infrared spectroscopy Halide Metal chemistry.chemical_compound Crystallography chemistry visual_art Kinetic isotope effect Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Phosphine Cis–trans isomerism
Zdroj:	Journal of Coordination Chemistry. 1:89-93
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958977108070749
Popis:	Infrared spectra (4000–200 cm−1) have been reported for Ni(DPE)X2 where X is Cl, Br and I and DPE is 1,2-bis(diphenylphosphino)ethane. The Ni[sbnd]X and Ni[sbnd]P stretching bands have been assigned based on the observed isotopic shifts due to the 58Ni-62Ni substitution. The Ni[sbnd]X stretching frequencies are always lower and the Ni[sbnd]P stretching frequencies are always higher in the cis-complexes such as Ni(DPE)X2 than in the corresponding trans-complexes such as Ni(PEt3)2X2. These differences between cis and trans configurations have been attributed to the strong trans-effect of phosphine ligands.
Databáze:	OpenAIRE
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