An isolable magnesium diphosphaethynolate complex

Robert J Gilliard; Dominikus Heift; Zoltán Benkő; Jerod M Keiser; Arnold L Rheingold; Hansjörg Grützmacher; John D Protasiewicz

doi:10.1039/c7dt04539e

An isolable magnesium diphosphaethynolate complex

Dalton Trans. 2018 Jan 15;47(3):666-669. doi: 10.1039/c7dt04539e.

Authors

Robert J Gilliard¹, Dominikus Heift², Zoltán Benkő³, Jerod M Keiser⁴, Arnold L Rheingold⁵, Hansjörg Grützmacher⁶, John D Protasiewicz⁴

Affiliations

¹ Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA. Protasiewicz@case.edu and Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland. hgruetzmacher@ethz.ch.
² Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland. hgruetzmacher@ethz.ch and Department of Chemistry, Durham University, Lower Mountjoy, South Road, Durham, DH1 3LE, UK.
³ Budapest University of Technology and Economics, H.111 Budapest Szent Gellért tér 4, Hungary.
⁴ Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA. Protasiewicz@case.edu.
⁵ Department of Chemistry, University of California, San Diego, La Jolla, CA 92093, USA.
⁶ Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland. hgruetzmacher@ethz.ch.

PMID: 29242885
DOI: 10.1039/c7dt04539e

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).