Optical and EPR spectra of the thionitrosyl complex [Cr(OH₂)₅(NS)]²⁺

TY - JOUR

T1 - Optical and EPR spectra of the thionitrosyl complex [Cr(OH2)5(NS)]2+

AU - Døssing, Anders Rørbæk

AU - Dethlefsen, Johannes Wied

PY - 2008

Y1 - 2008

N2 -   The green thionitrosyl complex [Cr(OH2)5(NS)]2+ was isolated in solution by hydrolysis of  [Cr(NCCH3)5(NS)]2+. The optical absorption spectra of both compounds are dominated by a band with vibrational progression around 600 nm assigned as a {dyz,zx,p*(NS)} ¿ {p*(NS),dyz,zx}* transition. The optical data indicate that the NS ligand is a weaker p-acceptor than the NO ligand. The EPR parameters of [Cr(OH2)5(NS)]2+ were determined: giso, g¦ and g-: 1.96515, 1.92686(5) and 1.986860(8); Aiso(53Cr), A¦(53Cr) and A-(53Cr): 25.3´10-4, 38´10-4 and 18.5´10-4cm-1; Aiso(14N), A¦(14N) and A-(14N): 6.5´10-4, 2.81´10-4 and 8.346(12)´10-4 cm-1.

AB -   The green thionitrosyl complex [Cr(OH2)5(NS)]2+ was isolated in solution by hydrolysis of  [Cr(NCCH3)5(NS)]2+. The optical absorption spectra of both compounds are dominated by a band with vibrational progression around 600 nm assigned as a {dyz,zx,p*(NS)} ¿ {p*(NS),dyz,zx}* transition. The optical data indicate that the NS ligand is a weaker p-acceptor than the NO ligand. The EPR parameters of [Cr(OH2)5(NS)]2+ were determined: giso, g¦ and g-: 1.96515, 1.92686(5) and 1.986860(8); Aiso(53Cr), A¦(53Cr) and A-(53Cr): 25.3´10-4, 38´10-4 and 18.5´10-4cm-1; Aiso(14N), A¦(14N) and A-(14N): 6.5´10-4, 2.81´10-4 and 8.346(12)´10-4 cm-1.

M3 - Journal article

SN - 0020-1693

VL - 362

SP - 259

EP - 262

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

ER -