Abstract
Procedures are given for the preparation and isolation of cis- and
trans-[Ir(tn)2Cl2]CF3SO3 and of [Ir(tn)3]Cl3,
(tn=propane-1,3-diamine). The compounds were prepared by the use
of Ir(thtp)3Cl3 (thtp=tetrahydrothiophene) as starting material,
using either DMSO or neat tn as solvent. A procedure for the
preparation of [Rh(tn)3]Cl3 in quantitative yield from
Rh(thtp)3Cl3 is also given. The complexes were characterized by 1H
and 13C NMR and by UV/VIS spectroscopy. The conformation of the
six-membered chelate rings of [Ir(tn)3]3+ in the solid state was
determined by single-crystal X-ray diffraction of [Ir(tn)3]
[Co(CN)6] x 5H2O. The three chelate rings all adopt the
energetically favoured chair conformation; however, the overall
idealized symmetry is C1. A comparative ligand field analysis,
based on Gaussian resolution of the solution UV/VIS spectra for a
number of homoleptic [M(N6)]3+ (M=CoIII, RhIII, IrIII) complexes,
is also presented.
| Original language | English |
|---|---|
| Journal | Acta Chemica Scandinavica |
| Volume | 52 |
| Pages (from-to) | 1017-1023 |
| Publication status | Published - 1998 |
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