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Some Transition Metal Complexes of the Diacetylenic Diphosphine Ph2PC2C2PPh2: Synthesis and Crystal Structures

DOI: 10.1039/DT9920001157

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1157 - 1164 (1992)

Update date:2022-08-04

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Authors:

Adams, Chris J.Adams, Chris J.

Bruce, Michael I.Bruce, Michael I.

Horn, ErnstHorn, Ernst

Tiekink, Edward R. T.Tiekink, Edward R. T.

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Article abstract of DOI:10.1039/DT9920001157

Several complexes of the acetylenic ditertiary phosphine, Ph2PC2C2PPh2, containing Mo, W, Fe, Ru or Au have been prepared; one CC triple bond in the Mo, W or Fe derivatives has been co-ordinated to Co2(CO)6 or Pt(PPh3)2 groups.Crystal structure determinations of <2(μ-PPh2C2C2PPh2)> 3 and 2-<(OC)5W(PPh2)>CC>(CO)6> 7 show that the P-bonded M(CO)n groups take up transoid positions; in 3, the PCCCCP chain, which is situated about a centre of inversion, is nearly linear with CC distances of 1.192(7) Angstroem <1.201(6) Angstroem, molecule b>.In 7, co-ordination of the Co2(CO)6 group to one CC bond lengthens that bond by 0.13 Angstroem, compared with the unco-ordinated CC bond, and induces bend-back of the substituents of 141-143(1) deg (PPh2) and 145-146(1) deg (C2PPh2).Crystals of 3 are triclinic, space group P1/, a = 11.261(1), b = 12.456(2), c = 13.061(2) Angstroem, α = 79.23(2), β = 75.73(1), γ = 78.75(2) deg, Z = 2; 2870 data were refined to R = 0.042, R'= 0.046.Crystals of 7 are triclinic, space group P1/, a = 17.940(4), b = 19.695(4), c = 16.449(2) Angstroem, α = 111.92(1), β = 108.83(1), γ = 100.29(2) deg, Z = 4; 5942 data were refined to R = 0.055, R'= 0.056.

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Product name:{Pt{(OC)4Fe(P(C6H5)2)}C2{C2(P(C6H5)2)Fe(CO)4}}(P(C6H5)3)2

Cas No:142079-74-1

142079-74-1

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