Crystal Structure Analysis
of (Morpholino)(Phenyl)(Dicyclohexylamino)
Phosphiniminocyclotrithiazene1
Srinivas Janaswamy*, G. Sreenivasa Murthy*, T. Mohan** , and M. N. Sudheendra Rao**
* Department of Physics, Indian Institute of Technology Madras, Chennai, 600036 India
** Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 India
e-mail: srinivas@foodsci.purdue.edu
Received March 20, 2002
Abstract—The title compound (C6H5)(C4H8NO)[N(C6H11)2]P=N–S3N3 crystallizes in a triclinic crystal sys-
tem with unit cell parameters a = 9.8884(4) Å, b = 10.6075(1) Å, c = 14.2276(2) Å, 
= 78.14(3)°, 
=
79.31(1)°, 
= 65.42(2)°, V = 1319.44(6) Å3 , Z = 2, and space group 
. The cyclotrithiazene ring adopts a
“distorted chair” conformation with a deviation of 0.682(7) Å for the tricoordinated sulfur atom. Remarkably,
a short exocyclic S–N bond length 1.489(4) Å along with a large P–N–S angle 136.2(3)° are observed with the
iminophosphorus moiety. © 2003 MAIK “Nauka/Interperiodica”.
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