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

Add time:09/01/2019    Source:sciencedirect.com

Reaction of (μ-SCH2CH2CH2S-μ)Fe2(CO)6 (1) with 2-(diphenylphosphino)benzaldehyde in the presence of Me3NO·2H2O yielded monosubstituted complex (μ-SCH2CH2CH2S-μ)Fe2(CO)5[Ph2P(2-C6H4CHO)] (3) and disubstituted complex (μ-SCH2CH2CH2S-μ)Fe2(CO)4[Ph2P(2-C6H4CHO)]2 (4) in 47% and 23% yields, respectively, whereas reaction of [μ-SCH2CH(CH3)S-μ]Fe2(CO)6 (2) with 2-(diphenylphosphino)benzaldehyde and Me3NO·2H2O afforded monosubstituted complex [μ-SCH2CH(CH3)S-μ]Fe2(CO)5[Ph2P(2-C6H4CHO)] (5) in 92% yield. In addition, reactions of 1 or 2 with isopropyldiphenylphosphine in the presence of Me3NO·2H2O gave monosubstituted complexes (μ-SCH2CH2CH2S-μ)Fe2(CO)5[Ph2PCH(CH3)2] (6) and [μ-SCH2CH(CH3)S-μ]Fe2(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.

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