129239-12-9Relevant academic research and scientific papers
Coordination Ability of Alkynylphosphines RnP(CC-R')3-n
Lang, Heinrich,Zsolnai, Laszlo
, p. 259 - 264 (2007/10/02)
Alkynylphosphines RP(CC-R')2 (2) react with one equivalent of octacarbonyldicobalt to yield selectively the η2-? sideon-coordinated alkyne complexes (R)(R'-CC)P2-CC-R')Co2(CO)6> (6); with another equivalent of Co2(CO)8 the dicoordinated compounds (R)P2-CC-R')Co2(CO)6>2 (7) are obtained. 7 may also be synthesized directly by the reaction of 2 with two equivalents of Co2(CO)8.However, PC-Ph)3 yields with two equivalents of Co2(CO)8 the cyclic Co2P2C2 system C)(R')P2-CC-Ph)Co2(CO)5>>2 (4) 2-CC-Ph)Co2(CO)6>.Decarbonylation of 6a gives the six-membered cyclic compound C)P2-CC-Ph)Co2(CO)5>>2 (8), while 6b yields the cluster Co3(CO)9(μ3-PtBu) (9).The structure of (tBu)P2-CC-H)Co2(CO)6>2 (7b) is elucidated by an X-ray analysis.
