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Eight‐Coordinate [Bis(oxyiminodiactate titanium( IV )] 2− and Nine‐Coordinate [Bis(oxyiminodiacetate)aquazirconium( IV )] 2− ; Variation in Coordination Mode in Amavadin‐Like Complexes
Author(s) -
Harben Spencer M.,
Smith Paul D.,
Beddoes Roy L.,
Collison David,
Garner C. David
Publication year - 1997
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199718971
Subject(s) - center (category theory) , metal , crystallography , titanium , ion , molecule , coordination number , chemistry , metal ions in aqueous solution , stereochemistry , organic chemistry
N ‐hydroxyiminodiacetic acid (H 3 (hida) reacts with [TiO(acac) 2 ] or [Zr)acac) 4 ] to form [Ti(hida) 2 ] 2− or These complexes crystallize from water with Ca 2+ counter ions in the form of extended networks. The metal center in the Ti IV complex is eight‐coordinate, whereas the larger Zr IV center is nine‐coordinated with ligation of an additional H 2 O molecule (see picture on the right).