Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Thermal Decomposition of Hexamminenickel(II) Complexes
Nobuyuki TanakaMasahiro KagawaMinoru Kamada
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1968 Volume 41 Issue 12 Pages 2908-2913

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Abstract

From the thermogravimetric analysis, hexamminenickel(II) complexes were confirmed to decompose in two or three steps through lower ammine intermediates NiXm·nNH3: n=2, 1 and m=2 for X=Cl; n=2 and m=2 for X=I, Br; n=4 and m=2 for X=NO3 and n=2, 1/2 and m=1 for X=SO4. The diffuse reflectance spectra of these intermediates have been measured in a range between 5000 to 27000 cm−1, and they suggested that these intermediates may be polymers in which nickel ions were octahedrally coordinated with ammonia molecules and bridging halogen atoms. The infrared absorption spectra of these intermediates obtained in a range between 5000 and 60 cm−1 are also reported.

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