In:
Zeitschrift für anorganische und allgemeine Chemie, Wiley, Vol. 629, No. 7-8 ( 2003-07), p. 1265-1271
Abstract:
Reactions of a Hexachloro‐substituted Diazadiphosphetidine with Diethylaminotrimethylsilane The reaction of the 2, 2, 2, 4, 4, 4‐hexachlorosubstituted diazadiphosphetidine 1 with varying amounts of diethylaminotrimethylsilane furnished the diazadiphosphetidine 2 or the diphosphonium compound 3 . Reaction of 1 with two equivalents of diethylaminotrimethylsilane led to the tetrachlorodiazadiphosphetidine 2b , while excess of the aminosilane furnished the salt 3 . Opening of the four‐membered ring, as in the reaction with primary amines, was not observed. The ring was opened only upon hydrolysis of 3 , conducted in the absence of base, with formation of the phosphonium‐phosphoryl compound 6 . Single crystal structure determinations are reported for 2b , 3 (as the chloride salt/dichloromethane solvate), 4 (the corresponding HCl 2 ‐salt) and 6 . The structure of 2b involves two independent molecules. The molecules of 2b and the cations of 3 and 4 display inversion symmetry, and the central four‐membered rings are thus exactly planar. The crystal packing of 2b involves short chlorine‐chlorine contacts. In 3 and 4 , hydrogen bonds of the form C‐H···Cl are observed. The asymmetric unit of 6 contains two independent formula units and two molecules of water; classical hydrogen bonds connect the various residues to form infinite ribbons.
Type of Medium:
Online Resource
ISSN:
0044-2313
,
1521-3749
DOI:
10.1002/zaac.v629:7/8
DOI:
10.1002/zaac.200300074
Language:
English
Publisher:
Wiley
Publication Date:
2003
detail.hit.zdb_id:
201094-X
detail.hit.zdb_id:
1481139-X
