Robert J.
Gilliard, Jr., 
ab
Dominikus
Heift,
bc
Zoltán
Benkő,
d
Jerod M.
Keiser,
a
Arnold L.
Rheingold,
e
Hansjörg
Grützmacher
*b
and
John D.
Protasiewicz
*a
ab
Dominikus
Heift,
bc
Zoltán
Benkő,
d
Jerod M.
Keiser,
a
Arnold L.
Rheingold,
e
Hansjörg
Grützmacher
*b
and
John D.
Protasiewicz
*a
Abstract
The reaction of magnesium chloride with two equivalents of sodium phosphaethynolate, Na[OCP]·(dioxane)2.5 (1), yields a magnesium diphosphaethynolate complex, [(THF)4Mg(OCP)2] (3). The formation of compound 3 goes through a monosubstituted chloromagnesium phosphaethynolate Mg(OCP)Cl (2). The structure of 3 was determined via a single crystal X-ray diffraction study. For comparison, we also report the structure of a monomeric sodium phosphaethynolate complex, [Na(OCP)(dibenzo-18-crown-6)] (4).
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