Metal complexes of selenophosphinates from reactions with (R2PSe)2Se: [M(R2PSe2)n] (M = ZnII, CdII, PbII, InIII, GaIII, CuI, BiIII, NiII; R = iPr, Ph) and [MoV2O2Se2(Se2PiPr2)2]
Facile and reproducible syntheses of bis(dialkylselenophosphenyl)-selenides and -diselenides: X-ray structures of (iPr2PSe)2Se, (iPr2PSe)2Se2 and (Ph2PSe)2Se