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Vibrational spectra and structure of K2Zn(NH2)4 and Rb2(NH2)4 amides

✍ Scribed by G. Lucazeau; L. Guemas; A. Novak

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 555 KB
Volume: 20
Category: Article
ISSN: 0020-1693
DOI: 10.1016/s0020-1693(00)94083-0

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✦ Synopsis

The infrared and Raman spectra of polycrystalline samples of K,Zn(NHJ,, K2Zn(NDd4, Rb2Zn(NHz), and RbzZn(NDz)d have been investigated at room and liquid nitrogen temperature in the 4000 to 100 cm-' range. An assignment of the observed bands is given. There are at least four different N-H distances in RbZn(NHJ4 probably related to a distorted tetrahedron Zn(NH& The Zn-N stretching vibrations occur in the 430 to 370 cm-' range and are not much coupled with NH2 vibrations. The Zn-N stretch force constant has been determined to be about 1.20 md/A. A general correlation between the NH stretching frequency and metal-nitrogen stretching force constant for a number of inorganic amides is discussed.

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