Synthesis and spectroscopic properties of 1,2-diiminetricarbonylrhenium(I)chloride complexes with aliphatic diimines (or 1,4-diaza-1,3-butadienes) asligands

Citation
M. Leirer et al., Synthesis and spectroscopic properties of 1,2-diiminetricarbonylrhenium(I)chloride complexes with aliphatic diimines (or 1,4-diaza-1,3-butadienes) asligands, Z NATURFO B, 54(3), 1999, pp. 341-344
Citations number
19
Categorie Soggetti
Chemistry
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
ISSN journal
09320776 → ACNP
Volume
54
Issue
3
Year of publication
1999
Pages
341 - 344
Database
ISI
SICI code
0932-0776(199903)54:3<341:SASPO1>2.0.ZU;2-T
Abstract
Re(1,2-diimine)(CO)(3)Cl complexes with the aliphatic bidentate ligands dii minosuccino-dinitrile (DISN), benzilbisanile (BEAN), bisacetylbisanile (BAB A), and benzildiimine (BEDIM) are reported. The compounds show Re(I) to pi* (diimine) metal-to-ligand charge transfer ((MLCT) absorptions in the visibl e spectral region. The energy of these MLCT-transitions decreases in the se ries BABA > BEDIM > BEAN > DISN, depending on the pi* acceptor properties o f the coordinated diimine ligands. The maxima of these CT bands undergo a s olvent-dependent shift (negative solvatochromism), which indicates a partia l charge redistribution in the excited state. The compounds are not photolu minescent at room temperature and 77 K.