Please use this identifier to cite or link to this item: https://doi.org/10.1107/S1600536804019592
Title: A hexacoordinated aluminium complex with a new type of seven-membered chelate ring involving a cyclic phosphate ester
Authors: Kumar, N.S.
Vittal, J.J. 
Kumara Swamy, K.C.
Issue Date: Sep-2004
Source: Kumar, N.S., Vittal, J.J., Kumara Swamy, K.C. (2004-09). A hexacoordinated aluminium complex with a new type of seven-membered chelate ring involving a cyclic phosphate ester. Acta Crystallographica Section E: Structure Reports Online 60 (9) : m1321-m1323. ScholarBank@NUS Repository. https://doi.org/10.1107/S1600536804019592
Abstract: The molecular structure of the title compound, tris[2,3,4,5-tetrachloro-6- (4,8-di-tert-butyl-2,10-dimethyl-6-oxo-12H-5,7-dioxa-6λ. 5-phosphadibenzo[a,d]cycloocten-6-yloxy)phenoxido]aluminium benzene 0.25-solvate, [Al(C 29H 30C 14O 5P) 3]·-0.25C 6H 6, has been determined. The Al atom, with site symmetry 3, is hexacoordinate and is part of a new type of seven-membered chelate ring, with a catecholate O atom forming a covalent bond and a phosphoryl O atom forming a coordinate covalent bond. As expected, the Al - O coordinate bond is longer than the Al - O covalent bond. The phosphocine ring has a tub conformation, with an intramolecular C - H⋯O interaction between one of the ArCH 2 H atoms and the phosphoryl O atom. © 2004 International Union of Crystallography Printed in Great Britain - all rights reserved.
Source Title: Acta Crystallographica Section E: Structure Reports Online
URI: http://scholarbank.nus.edu.sg/handle/10635/92943
ISSN: 16005368
DOI: 10.1107/S1600536804019592
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