The Reaction of Re3Br9 with P(CH2OH)3: Diversity of Modes of Coordination of Hydroxymethylphosphine to Clusters

详细

The reaction of Re₃Br₉ with P(CH₂OH)₃ (THP) in methanol under inert atmosphere gives a new cluster complex, [Re₃(µ₂‑Br)₃Br₃(µ₃-P,O,O-P(CH₂OH)(CH₂O)₂)₂H] ∙ 0.8H₂O · 1.6MeOH (I). With access of air, the reaction produces a different product, [{Re₃(µ₂-Br)₃Br₂(OCH₂)₂PCH₂-OP(CH₂OH)₂}₂-{(P(CH₂OH)(CH₂O)₂)}₂] (II), in which two triangular clusters are linked by deprotonated THP molecules as bridging ligands. In addition, each cluster is coordinated in a tetradentate fashion by the phosphine-phosphinite ligand, resulting from the oxidative condensation of two THP molecules (CIF files CCDC 1829565 (I) and 1829566 (II)).