1508277-30-2Relevant academic research and scientific papers
Reactions of (Diphenylphosphinomethyl)zirconocene chloride with B(C 6F5)3: Competition between P/B and P/Zr + frustrated lewis pair reactions
Xu, Xin,Kehr, Gerald,Daniliuc, Constantin G.,Erker, Gerhard
, p. 7306 - 7311 (2013)
The title complex Cp2ZrCl(CH2PPh2) reacts with B(C6F5)3 under specific conditions by phosphinomethyl transfer to give the phosphane-stabilized salt [Cp 2ZrCl+][Ph2PCH2B(C6F 5)3-]. X-ray crystal structure analysis showed the P-Zr coordination. This salt is trapped by phenyl isocyanate in an in situ three-component reaction to yield the respective P/Zr+ frustrated Lewis pair (FLP) addition product. In contrast, a mixture of Cp 2ZrCl(CH2PPh2)/B(C6F 5)3 and benzaldehyde under similar conditions gives the P/B FLP addition product. The Cp2ZrCl(CH2PPh 2)/B(C6F5)3 system may form a P/B adduct [Cp2ZrCl(CH2PPh2)·B(C 6F5)3] or a P/Zr+ adduct [Cp 2ZrCl·PPh2CH2B(C6F 5)3]. From the former it seems to show P/B FLP reaction and from the latter P/Zr+ FLP behavior; the outcome is dependent on the specific reagent and reaction conditions chosen.
