Synthesis of Mg Complexes Supported by Tris-(1-pyrazolyl)phosphine

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Abstract

The preparation and characterisation of two Mg coordination compounds supported by the tris(1-pyrazolyl)phosphine (P(pz)3) ligand, [{P(pz)3}Mg(MeCN)3](I)2 and [Mg{P(pz)3}2](I)2, is described. This is the first time this ligand has been coordinated to Mg or any other s-block metal and the complexes are the first examples of crystallographically characterised P(pz)3 complexes on any metal. The structures of the new Mg complexes are compared with related species with the more common tridentate facial ligands, tris(pyrazolyl)hydroborate (Tp), tris(pyrazolyl)methane (Tpm), and tris(pyrazolyl)methanide (Tpmd).

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