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Synthesis of Square‐Planar Aluminum(III) Complexes
Author(s) -
Thompson Emily J.,
Myers Thomas W.,
Berben Louise A.
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201407098
Subject(s) - chemistry , planar , pyridine , square (algebra) , benzene , crystallography , diethyl ether , ligand (biochemistry) , aluminum hydride , ether , medicinal chemistry , stereochemistry , ion , geometry , organic chemistry , mathematics , biochemistry , computer graphics (images) , receptor , computer science , methoxide
The synthesis of two four‐coordinate and square planar (SP) complexes of aluminum(III) is presented. Reaction of a phenyl‐substituted bis(imino)pyridine ligand that is reduced by two electrons, Na 2 ( Ph I 2 P 2− ), with AlCl 3 afforded five‐coordinate [( Ph I 2 P 2− )Al(THF)Cl] ( 1 ). Square‐planar [( Ph I 2 P 2− )AlCl] ( 2 ) was obtained by performing the same reaction in diethyl ether followed by lyphilization of 2 from benzene. The four‐coordinate geometry index for 2 , τ 4 , is 0.22, where 0 would be a perfectly square‐planar molecule. The analogous aluminum hydride complex, [( Ph I 2 P 2− )AlH] ( 3 ), is also square‐planar, and was characterized crystallographically and has τ 4 =0.13. Both 2 and 3 are Lewis acidic and bind 2,6‐lutidine.