Synthesis and reactivity of iron hydride with [P, Se]-chelate ligand

The synthesis and reactivity of a novel iron hydride supported by [P, Se]-chelate ligand have been explored. Iron hydride o-(Ph2P)C6H4SeFeH(PMe3)3 (1) was obtained via the reaction of (o-PPh2)PhSeH with Fe(PMe3)4. Complex 1 reacted with HCl or acetylacetone delivered a bis-chelated iron complex (o-(Ph2P)C6H4Se)2Fe(PMe3) (2). Through the substitution reaction of PMe3 ligand of complex 1 by CO, monocarbonyl iron(II) hydride o-(Ph2P)C6H4SeFeH(CO) (PMe3)2 (3) with two isomers 3A and 3B was obtained. The molecular structures of complexes 1 and 2 were determined by single crystal X-ray diffraction.