Dirhenium carbonyl complexes bearing 2-vinylpyridine, morpholine and 1-methylimidazole ligands

作者：Kabir Shariff E^*; Ahmed Faruque; Das Anamika; Hassan Mohammad R; Haworth Daniel T; Lindeman Sergey V; Siddiquee Tasneem A; Bennett Dennis W

来源：Journal of Organometallic Chemistry, 2008, 693(8-9): 1696-1702.

DOI：10.1016/j.jorganchem.2007.09.023

• rhenium carbonyl
• 2-vinylpyridine
• morpholine
• 1-methylimidazole
• X-ray structures

Treatment of the labile compound [Re(2)(CO)(8)(MeCN)(2)] with 2-vinylpyridine in refluxing benzene affords exclusively the new compound [Re(2)(CO)(8)(mu-eta(1):eta(2)- NC(5)H(4)CH=CH(2))] (1) in 39% yield in which the mu-eta(1):eta(2)-vinylpyridine ligand is coordinated to one Re atom through the nitrogen and to the other Re atom via the olefinic double bond. Reaction of [Re(2)(CO)(8)(MeCN)(2)] with morpholine in refluxing benzene furnishes two compounds, [Re(2)(CO)(9)(eta(1)-NC(4)H(9)O)] (2) and [Re(2)(CO)(8)(eta(1)-NC(4)H(9)O)(2)] (3) in 5% and 29% yields, respectively. Reaction of [Re(2)(CO)(8)(MeCN)(2)] with 1-methylimidazole gives [Re(2)(CO)(8){eta(1)-NC(3)H(3)N(CH(3))}(2)] (4) and the mononuclear compound fac-[ReCl(CO)(3){eta(1)-NC(3)H(3)N(CH(3))}(2)] (5) in 18% and 26% yields, respectively. In the disubstituted compounds 2 and 4, the heterocyclic ligands occupy equatorial coordination sites. The mononuclear compound 5 consists of three CO groups, two N coordinated eta(1)-1-methylimidazole ligands and a terminal Cl ligand. The XRD structures of complexes 1, 3 and 5 are reported.

• 出版日期2008-4-15