Tetracarbonyl([(diphenylphosphino)methyl]dimethylphosphoniummethylid-α-C,ω-P)chrom(0)

Tetracarbonyl(diphenyl[(dimethylphosphino)methyl]phosphan-P,P')chrom(0)

tetracarbonyl[triphenylphosphonium bis(diphenylarsino)methylide]chromium

tetracarbonyl[(methanidodiphenylphosphonio)(phenylthio)(triphenylphosphonio)methanide-α-C, ω-P]chromium(0)