2-(Diphenylphosphino)benzaldehyde or isopropyldiphenylphosphine substituted diiron dithiolate complexes

Reaction of (mu-SCH2CH2CH2S-mu)Fe-2(CO)(6) (1) with 2-(diphenylphosphino)benzaldehyde in the presence of Me3NO center dot 2H(2)O yielded monosubstituted complex (mu-SCH2CH2CH2S-mu)Fe-2(CO)(5)[Ph2P(2-C6H4CHO)] (3) and disubstituted complex (mu-SCH2CH2CH2S-mu)Fe-2(CO)(4)[Ph2P(2-C6H4CHO)](2) (4) in 47% and 23% yields, respectively, whereas reaction of [mu-SCH2CH(CH3)S-mu]Fe-2(CO)(6) (2) with 2-(diphenylphosphino)benzaldehyde and Me3NO center dot 2H(2)O afforded monosubstituted complex [mu-SCH2CH(CH3)S-mu]Fe-2(CO)(5) [Ph2P(2-C6H4CHO)] (5) in 92% yield. In addition, reactions of 1 or 2 with isopropyldiphenylphosphine in the presence of Me3NO center dot 2H(2)O gave monosubstituted complexes (mu-SCH2CH2CH2S-mu)Fe-2(CO)(5)[Ph2PCH (CH3)(2)] (6) and [mu-SCH2CH(CH3)S-mu]Fe-2(CO)(5)[Ph2PCH(CH3)(2)] (7) in 84% and 75% yields, respectively. The new complexes 3-7 were characterized by elemental analysis, spectroscopy as well as X-ray crystallography. (C) 2017 Elsevier Ltd. All rights reserved.