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Communication | Regular issue | Vol 55, No. 9, 2001, pp.1659-1662
Published online, 1st January, 1970
DOI: 10.3987/COM-01-9288
Synthesis and Some Properties of Phosphoimino-1-azaazulene Derivatives

Noritaka Abe,* Hiroyuki Fujii, Kenji Tahara, and Motoo Shiro

*Department of Chemistry, Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan

Abstract

3-Phenyl-8-triphenylphosphoimino- and 2-triphenylphospho-imino-1-azaazulenes were prepared by the reaction of the corresponding 8- and 2-amino-1-azaazulenes with triphenylphosphine dibromide. The structure of 3-phenyl-8-triphenylphosphoimino-1-azaazulene was investigated by X-Ray crystallographic analysis and molecular orbital calculation. The P-atom has trigonal bipiramidal coordination and the intramolecular distance between the N-1 and the P-atom is 2.762(6) Å; the existence of an interaction between N-1 and the P-atom is considered.