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A new anion, [Hg-2(SCN)(7)](3-): First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)(6)][Hg-2(SCN)(7)]

Bala, R., Sharma, R. P., Sharma, R. and Kariuki, Benson 2006. A new anion, [Hg-2(SCN)(7)](3-): First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)(6)][Hg-2(SCN)(7)]. Inorganic Chemistry Communications 9 (8) , pp. 852-855. 10.1016/j.inoche.2006.05.003

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Abstract

The reaction of [Co(NH3)6]Cl3 with a mixture of HgCl2 and NH4SCN in 1:2:8 molar ratio in hot aqueous medium leads to formation of a new complex salt, [Co(NH3)6][Hg2(SCN)7] (1) in 70% yield. This hexaamminecobalt(III) complex salt has been characterized by elemental analyses, solubility measurement and spectroscopic techniques (e.g. UV/Visible, IR and 13C NMR). Single crystal X-ray structure determination of 1 revealed the presence of discrete [Co(NH3)6]3+ cation and a new anion, [Hg2(SCN)7]3−. This is the first report of a complex salt containing the new anion. The crystal lattice of the complex salt is stabilized by electrostatic forces of attraction and N–H…N (thiocyanate) hydrogen bonding interactions.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Cobalt(III); Coordination chemistry; Second sphere coordination; Spectroscopy; X-ray crystallography
Publisher: Elsevier
ISSN: 1387-7003
Last Modified: 18 May 2019 09:37
URI: http://orca-mwe.cf.ac.uk/id/eprint/47236

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