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Synthesis and Structure of Lewis Base‐Coordinated Phosphanylalumanes Bearing P–H and Al–Br Moieties
Author(s) -
Agou Tomohiro,
Ikeda Shin,
Sasamori Takahiro,
Tokitoh Norihiro
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800175
Subject(s) - chemistry , lewis acids and bases , carbene , substituent , halogen , stereochemistry , medicinal chemistry , halogen bond , hydrogen bond , base (topology) , frustrated lewis pair , molecule , organic chemistry , catalysis , mathematical analysis , alkyl , mathematics
Phosphanylalumanes bearing hydrogen and halogen substituents (RHP–AlXR, R = organic substituent, X = halogen) are expected to be useful synthetic precursors for P=Al doubly bonded species, phosphaalumenes (RP=AlR), though there have been only limited number of H , X ‐functionalized phosphanylalumanes. In this communication, synthesis and structure of a Lewis base coordinated phosphanylalumane bearing P–H and Al–Br moieties are reported. Reaction of LiPHMes with BbpAlBr 2 (OEt 2 ) {Bbp = 2,6‐[CH(SiMe 3 ) 2 ] 2 C 6 H 3 } followed by the treatment with a N‐heterocyclic carbene (L) afforded the Lewis base coordinated H , Br ‐functionalized phosphanylalumane, MesP(H)‐Al(Br)(L)Bbp (L = N‐heterocyclic carbene). Its Al–P bond length is comparable to that observed for the previously reported H , Cl ‐functionalized phosphanylalumane free from Lewis base‐coordination, indicating the negligible contribution of Al=P double‐bond character in the phosphanylalumane derivatives.