A new anion, [Hg2(SCN)7]3−: First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)6][Hg2(SCN)7]

Synthesis, characterization and X-ray structural studies of three hybrid inorganic–organic compounds: Silver(I)-, lead(II)- and tris(phenanthroline)copper(II)- 2,6-naphthalenedisulfonate (2,6-nds)

“…By using ion exchange strategy, we have successfully isolated and structurally characterized hitherto unknown anions: [Hg 2 (SCN) 7 ] 3- [13], [HgBr 5 ] 3- [14], [HgBr 4 Cl] 3- [15], [CdBr 4 Cl 2 ] 4- [16], [CdBr 4 benzoate] 3- [17] and [Cd 2 X 7 ] 3- [18] with appropriate large cation i.e. cationic metal complex.…”

Stabilization of tetrameric metavanadate ion by tris(1,10-phenanthroline)cobalt(III): synthesis, spectroscopic, and X-ray structural study of [Co(phen)3]3(V4O12)2Cl · 27H2O

“…The importance of shape and size of cation in precipitating the desired complexes is well illustrated by halocuprate and iodoplatinate(II) salts [10, 11]. Counter ions which can have non-covalent interactions with anions in addition to the electrostatic interaction are useful in synthesis of new and unusual anionic species like [Hg 2 (SCN) 7 ] 3- and [HgBr 5 ] 3- [12, 13]. In these complexes, in addition to the large counter anion, non-covalent interaction like N-H…X play crucial roles in lattice stabilization.…”

A rational synthesis of new anion [HgBr4Cl]3−: Synthesis, characterization and single crystal X-ray structure determination of [Co(NH3)6][HgBr4Cl]

“…In our earlier investigations, we have reported the synthesis and structural characterization of new anions [Hg 2 (SCN) 7 ] 3− [5] and [HgBr 5 ] 3− [6] with the help of hexamminecobalt(III) cation and it was envisaged that shape and charge on the complex cation [Co(NH 3 ) 6 ] 3+ is conducive for the formation of such anions of hitherto unknown. Our experience with hexamminecobalt(III) cation prompted us to examine whether it is possible to isolate new halogenidomercurate(II) anions similar to [HgBr 5 ] 3− but having the mixed halogens like [HgBr 4 Cl] 3− or [HgBr 3-Cl 2 ] 3− or similar kind.…”