837377-01-2Relevant academic research and scientific papers
Some mixed transition metal compounds of 1,3-diyne with metallacycles derived by cross-coupling of alkynyl ligands and sequential C-C bond coupling between 1,3-diyne and carbon monoxide
Yamazaki, Shinsaku,Taira, Zenei,Yonemura, Toshiaki,Deeming, Anthony J.
, p. 20 - 27 (2005)
By treating cis-Pt(C≡CPh)2(dppe) (1) with Mn 2(CO)9(CH3CN) in refluxing toluene, cross-coupling of alkynyl ligands occurs to afford mixed transition metal compound of 3,4-diphenyl-1,3-butadiyne, [Mn2Pt(μ3-η 1:η1:η2:η4 - PhCCCCPh)(CO)6(dppe)] (2) in 19-38% isolated yield. 2 has a structure formed by an unprecedented heterometal complexation of 1-manganacyclo-2,3,4-pentatriene. The Pt(II) acetylide, by treating with Ru 3(CO)9(PPh3)3, directly converts into a π-complex of 1,3-diyne, Pt(η2-PhCCCCPh)(dppe) (4), in 38% yield. By reacting π-alkyne compound Pt(η 2-PhCC-C≡CPh)(PPh3)2 with Fe(CO) 5 and Ru3(CO)12, bimetallic [FePt(μ 3-1:η1:η2-COC 4Ph2)(CO)3(PPh3)2] (5a) and triangular cluster [MPt2(μ3-η 1:η1:η2-PhCC-C≡CPh)-(CO) 2(PPh3)2] (6a) have successionally been isolated in considerable yields. A dimetallic analogue of alkyne [FePt{μ 2-η1:η1:η2-C(O)C 2H2}(CO)3(Ph3)2] (5b) and trimetallic [MPt2(μ3-η1:η 1:η2-R1CCR2)(CO) 7-n(PPh3)n] (6b-f) {R1 = Ph, R 2 = C=CPh, n = 3, M = Fe, 6b; R1 = R2 = H, n = 3, M = Fe, 6c; R1 = R2 = Ph, n = 2, M = Fe, 6d and iso-6d; R1 = R2 = OCOCH3, n = 2, M = Fe, 6e; M = Ru, 6f} have consecutively been prepared. Crystal structures of five of the compounds have been determined.
