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Issue 42, 2013
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Synthesis, structure and light scattering properties of tetraalkylammonium metal isothiocyanate salts

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Abstract

A series of ammonium and tetraalkylammonium metal isothiocyanate salts of the type Qy[M(NCS)x] (M = Cr(III), x = 6, y = 3, Q = NH4+, Me4N+, Et4N+, n-Bu4N+; M = Mn(II), x = 6, y = 4, Q = Me4N+; M = Mn(II), x = 5, y = 3, Q = Et4N+; M = Fe(III), x = 6, y = 3, Q = Me4N+, Et4N+, n-Bu4N+; M = Co(II), x = 4, y = 2, Q = n-Bu4N+; M = Eu(III), Gd(III), Dy(III), x = 6, y = 3, Q = Bu4N+) has been synthesized and structurally characterized. The octahedral Cr(III) salts are isostructural to previously and newly reported Fe(III) salts. The Ln(III)-containing anions are also octahedral. For Mn(II), although the Me4N+ salt is octahedral, the Et4N+ salt [Mn(NCS)5]3− possesses a distorted trigonal bipyramidal geometry. For (Et4N)3[Fe(NCS)6] and (n-Bu4N)3[Fe(NCS)6], a solid-state size-dependent change in colour from red to green was observed and was attributed to a light scattering phenomenon in the crystalline samples.

Graphical abstract: Synthesis, structure and light scattering properties of tetraalkylammonium metal isothiocyanate salts

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Publication details

The article was received on 12 Apr 2013, accepted on 30 Jul 2013 and first published on 12 Aug 2013


Article type: Paper
DOI: 10.1039/C3DT50974E
Dalton Trans., 2013,42, 14982-14991

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    Synthesis, structure and light scattering properties of tetraalkylammonium metal isothiocyanate salts

    D. Savard and D. B. Leznoff, Dalton Trans., 2013, 42, 14982
    DOI: 10.1039/C3DT50974E

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