INTERMOLECULAR METAL-METAL BONDS AND ABSORPTION SPECTRA OF SOME NICKEL(II) AND PALLADIUM(II) COMPLEXES OF vic-DIOXIMES

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Journal of the American Chemical Society (U.S.)

DOI:https://doi.org/10.1021/ja01551a004· OSTI ID:4324245

Banks, C V; Barnum, D W

Intermolecular metal-metal bonds in ceriain square planar complexes of Ni(II),Pd(II), Pt(II), and Au(III) give rise to san absorption band in the visible region of the spectrum. This band gives rise to unusual dichroism in crystals of these complexes. The absorption spectra of single crystals of some nickel complexes were measured using plane polarized light and it was shown that complexes containing strong metal-metal bonds show ""abnormal'' dichroism while complexes with very weak metal-metai bonds show practically "normal" dichroism. The absorption spectra of colloidal suspensions of several of the complexes were measured. The position of the band due to metal-metal bonding depends primarlly on the length of the metal-metal bonds, the central metal ion and the crystal structure. The position of this band also depends, bet to a much lesser extent, on the particle size, since this affects the selective scattering of light on the long wave length side of an absorption band. (auth)

• Research Organization: Iowa State Coll. Ames
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-001987
• OSTI ID: 4324245
• Journal Information: Journal of the American Chemical Society (U.S.), Journal Name: Journal of the American Chemical Society (U.S.) Vol. Vol: 80; ISSN JACSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION-- COLLOIDS-- COLOR-- CRYSTALS-- ELECTRONS-- GOLD COMPOUNDS-- GRAIN SIZE-- IONS-- LATTICES-- LIGHT-- MATHEMATICS-- MONOCRYSTALS-- NICKEL COMPOUNDS-- ORGANIC NITROGEN COMPOUNDS-- OXIMES-- PALLADIUM COMPOUNDS-- PHOTOMETRY-- POLARIZATION-- SPECTROSCOPY-- SUSPENSIONS-- VALENCE
CHEMISTRY
FREQUENCY-- MEASURED VALUES