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Preparation and circular dichroism of rhodium(I) complexes containing optically active trans-cyclooctene

1977; Elsevier BV; Volume: 127; Issue: 2 Linguagem: Inglês

10.1016/s0022-328x(00)89714-4

1872-8561

Samu Kinoshita, Yoshiro Terai, Kazuo Kashiwabara, Hiroaki Kido, Kazuo Saito,

Inorganic and Organometallic Chemistry

Three new rhodium(I) compounds containing optically active trans-cyclooctene (trans-C8H14) were prepared: [RhL {(+)D-trans-C8H14}2] (L = acetylacetonate and 1,3-diphenyl-1,3-propanedionate) and [Rh2Cl2{(+)D-trans-C8H14}4]. The absorption and circular dichroism spectra were measured and compared with those of [Pt2Cl4{(-)D-trans-C8H14}2]. The absolute configuration of coordinated alkenes is correlated with the CD spectra in the wave number regions, (20–30) x 103 cm-1 and 40 x 103 cm-1. In the former range the CD sign is the reverse of that of platinum(II)—alkene complexes, but in the latter region the CD signs are equal.