375396-74-0Relevant academic research and scientific papers
η2 (π)-Coordination of a bis-phosphonio-benzophospholide cation: A novel complexation mode for unsaturated phosphorus heterocycles
Gudat, Dietrich
, p. 2269 - 2273 (2008/10/08)
The bis-phosphonio-benzo[c]phospholide tetraphenylborate 4[BPh4] reacts with CpCo(C2H4)2 to form a chelate complex [Co(η5-Cp)(κ2,η 2(P=C)-4)][BPh4] (6[BPh4]) which was characterized by means of spectroscopic techniques and a single crystal X-ray diffraction study. The observed η2(π)-coordination of the benzophospholide moiety in the cation 6 is highly unusual for aromatic phosphorus heterocycles. The structural data suggest a pronounced coordination-induced localization of π-electrons in the condensed ring system. WILEY-VCH Verlag GmbH, D-69451 Weinheim, 2001.
