PINKAS, Jiří, T. L. WANG, R. A. JACOBSON and J. G. VERKADE. AZAALUMINATRANES EXHIBITING UNUSUAL COORDINATION GEOMETRIES FOR ALUMINUM. Inorg. Chem. Spojené státy americké: American Chemical Society, Washington DC, 1994, vol. 33, No 19, p. 4202-4210. ISSN 0020-1669.
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Basic information
Original name AZAALUMINATRANES EXHIBITING UNUSUAL COORDINATION GEOMETRIES FOR ALUMINUM
Authors PINKAS, Jiří, T. L. WANG, R. A. JACOBSON and J. G. VERKADE.
Edition Inorg. Chem. Spojené státy americké, American Chemical Society, Washington DC, 1994, 0020-1669.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Science
Keywords in English M = AL; PHOSPHA-WITTIG REAGENTS; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURE; AL-27-NMR
Tags AL-27-NMR, CRYSTAL-STRUCTURE, M = AL, MOLECULAR-STRUCTURE, PHOSPHA-WITTIG REAGENTS
Changed by Changed by: prof. RNDr. Jiří Pinkas, Ph.D., učo 627. Changed: 15/8/2001 11:11.
Abstract
The new monomeric azaaluminatrane Al(tert-BuMe(2)SiNCH(2)CH(2))(3)N, 6, was prepared by the reaction of [Al(NMe(2))(3)](2), 7, and (tert-BuMe(2)SiNHCH(2)CH(2))(3)N, 11, and was characterized by H-1, C-13, Al-27, and Si-29 NMR, and IR spectroscopies and mass spectrometry. Its analogue Al(Me(3)SiNCH(2)CH(2))3N, 3, was structurally characterized and shown to contain a trigonal monopyramidal aluminum center. The dimeric azaaluminatrane [Al(Me(3)SiNCH(2)CH(2))(2)(HNCH2CH2)N](2), 5, possesses an unusual cis configuration of the central four-membered ring, and the aluminum atoms display a distorted trigonal bipyramidal coordination sphere. Crystal data: 3, a = 13.503(5) Angstrom, b = 10.621(4) Angstrom, c = 17.840(6) Angstrom, beta = 93.29(3)degrees, V = 2554(2) Angstrom(3), Z = 4, space group P2(1)/c, R = 5.2%; 5, a = 12.134(3) Angstrom, b = 17.049(4) Angstrom, c = 18.297(5) Angstrom, beta = 100.02(2)degrees, V = 3726(2) Angstrom 3, Z = 4, space group P2(1)/n, R = 4.6%. Al-27 NMR chemical shifts for a series of Al-N compounds with aluminum coordination numbers ranging from three to six show increased shielding with increasing coordination number.
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