Ni(NH3)2(NO3)2 – A 3-D network through bridging nitrate units isolated from the thermal decomposition of nickel hexammine dinitrate

Breternitz, J., Godula-Jopek, A. and Gregory, D. H. (2018) Ni(NH3)2(NO3)2 – A 3-D network through bridging nitrate units isolated from the thermal decomposition of nickel hexammine dinitrate. Inorganics, 6(2), 59.

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Abstract

Nickel nitrate diammine, Ni(NH3)2(NO3)2, can be synthesised from the thermal decomposition of nickel nitrate hexammine, Ni[(NH3)6](NO3)2. The hexammine decomposes in two distinct major stages; the first releases 4 equivalents of ammonia while the second involves the release of NOx, N2, and H2O to yield NiO. The intermediate diammine compound can be isolated following the first deammoniation step or synthesised as a single phase from the hexammine under vacuum. Powder X-ray diffraction (PXD) experiments have allowed the structure of Ni(NH3)2(NO3)2 to be solved for the first time. The compound crystallises in orthorhombic space group Pca21 (a = 11.0628 (5) Å, b = 6.0454 (3) Å, c = 9.3526 (4) Å; Z = 4) and contains 11 non-hydrogen atoms in the asymmetric unit. Fourier transform infrared (FTIR) spectroscopy demonstrates that the bonding in the ammine is consistent with the structure determined by PXD.

Item Type:Articles
Additional Information:D.H.G. thanks Airbus Group Innovations for funding a studentship for J.B.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gregory, Professor Duncan
Authors: Breternitz, J., Godula-Jopek, A., and Gregory, D. H.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Inorganics
Publisher:MDPI
ISSN:2304-6740
ISSN (Online):2304-6740
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Inorganics 6:59
Publisher Policy:Reproduced under a Creative Commons License

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