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Synthesis and Single Crystal X‐ray Structures of Cationic Zinc β ‐Diketiminate Complexes
Author(s) -
Scheiper Christoph,
Schulz Stephan,
Wölper Christoph,
Bläser Dieter,
Roll Joachim
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300119
Subject(s) - cationic polymerization , zinc , chemistry , base (topology) , aluminate , lewis acids and bases , polymerization , medicinal chemistry , crystal structure , polymer chemistry , stereochemistry , crystallography , catalysis , organic chemistry , polymer , materials science , mathematical analysis , mathematics , cement , metallurgy
The cationic zinc complex [L 1 Zn][Al(OC(CF 3 ) 3 ) 4 ] ( 1 ) (L 1 = {[(2,4,6‐Me 3 –C 6 H 2 )NC(Me)] 2 CH}) bearing a weakly coordinating aluminate anion was obtained from reaction of L 1 ZnCl with Li[Al(OC(CF 3 ) 3 ) 4 ]. In addition, base‐stabilized zinc cations [L 1/2 Zn(base) 2 ][X] ( 2–5 ) (L 2 = {[(2,6‐ i Pr 2 –C 6 H 3 )NC(Me)] 2 CH}; X = [Al(OC(CF 3 ) 3 ) 4 ], [B(C 6 F 5 ) 4 ]) containing weakly coordinating anions and different Lewis bases (dimethylaminopyridine (dmap), tert ‐butylpyridine ( t BuPy)) were synthesized and structurally characterized. Moreover, the solid‐state structures of L 1 ZnMe ( 6 ) and the neutral base‐stabilized complexes t BuPy‐Zn(Cl)L 1 ( 7 ) and base‐Zn(Me)L 2 (base = dmap 8 , t BuPy 9 ) are reported and compared with those of 2 – 5 . Preliminary studies showed that 1 is catalytically activity in lactide polymerization at 160 °C.
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