Coordination complexes of chromium(0) with a series of 1,3-diphenyl-6-aryl­fulvenes

[摘要] The synthesis and structural properties of a series of chromium tricarbonyl `piano-stool' complexes bearing substituted penta­fulvene ligands were studied. The complexes, tricarbon­yl(1,3,6-tri­phenyl­fulvene)chromium(0) benz­ene hemisolvate, [Cr(C24H18)(CO)3]·0.5C6H6 (I), tricarbon­yl[1,3-di­phen­yl-6-(3-vinyl­phen­yl)fulvene]chromium(0), [Cr(C26H20)(CO)3] (II), and tricarbon­yl[1,3-diphenyl-6-(pyren-1-yl)fulvene]chromium(0), [Cr(C34H22)(CO)3] (III), each have a distorted octa­hedral geometry, with the fulvene coordinated in a π–η2:π–η2:π–η2 fashion. Significant deviation of the exocyclic fulvene double bond from the cyclo­penta­diene plane accompanies coordination. Evidence of non-covalent π–π inter­actions was observed in both (I) and (III), with centroid-to-centroid distances ranging from 3.330 (8) to 3.494 (8) Å.

[学科分类] 数学（综合）

[关键词] CRYSTAL STRUCTURE;PENTAFULVENE;CHROMIUM;PIANO STOOL;[PI]-[PI] INTERACTIONS