Dimethylencyclobuten als Komplexligand. Synthese und Struktur von Tricarbonyl(η6-diisopropylidencyclobuten)chrom und Bis(η2-dimethylencyclo
作者:Doris Rau、Ulrich Behrens
DOI:10.1016/0022-328x(93)83235-n
日期:1993.7
Diisopropylidenecyclobutene reacts with (CH3CN)3Cr(CO)3 to give the eta6-coordinated complex (eta6-diisopropylidenecyclo-butene)Cr(CO)3 (8). An X-ray structure determination confirms the eta6-coordination of the ligand with two long Cr-C(exo) bonds (248.2(5) and 259.0(4) pm). Dimethylenecyclobutene and (C9H7)Rh(C2H4)2 (C9H7 = indenyl) react to give bis(eta2-dimethylene-cyclobutene)Rh(eta5-C9H7) (9) with two eta2-bonded cyclobutene ligands as shown by an X-ray diffraction study.