Reactions of dipropargyl manolate, terephthalate with Co 2(CO) 8, Mo 2Cp 2(CO) 4 and RuCo 2(CO) 11 give the di or tetranuclear clusters. The crystal structure of [CH 2(CO 2CH 2C 2H-μ) 2][Co 2(CO) 6] 2 and [ p-(HC 2CH 2OCO)C 6H 4(CO 2CH 2C 2H-μ)][Co 2(CO) 6

Abstract

The reactions of dipropargyl manolate and terephthalate, respectively, with Co 2(CO) 8 in THF at room temperature gave four new compounds [R(CO 2CH 2C 2H-μ) 2][Co 2(CO) 6] 2 (R=CH 2, 1a; R=C 6H 4, 1b) and [(HC 2CH 2OCO)R(CO 2CH 2C 2H-μ)][Co 2(CO) 6] (R=CH 2, 2a; R=C 6H 4-1,4-, 2b), and compounds 2a and b reacted with RuCo 2(CO) 11 to form two new linked clusters [R(CO 2CH 2C 2H-μ) 2][Co 2(CO) 6][RuCo 2(CO) 9] (R=CH 2, 3a; R=C 6H 4-1,4-, 3b). The treatment of two dipropargyl esters, respectively, with RuCo 2(CO) 11 afforded another two new clusters [R(CO 2CH 2C 2H-μ) 2][RuCo 2(CO) 9] 2 (R=CH 2, 4a; R=C 6H 4-1,4-, 4b). The reactions of dipropargyl manolate, terephalate with Mo 2Cp 2(CO) 4 gave rise to the formation of dinuclear complexes [(HC 2CH 2OCO)R(CO 2CH 2C 2H-μ)][Mo 2Cp 2(CO) 4] (R=CH 2, 5a; R=C 6H 4-1,4-, 5b), compound 5a reacted with Co 2(CO) 8 to produce the cluster [CH 2(CO 2CH 2C 2H-μ) 2][Co 2(CO) 6][Mo 2Cp 2(CO) 4] 6a. All the new clusters have been characterized by C/H elemental analysis, IR and 1H NMR spectroscopies. The structure of [CH 2(CO 2CH 2C 2H-μ) 2][Co 2(CO) 6] 2 1a and [ p-(HC 2CH 2OCO)C 6H 4(CO 2CH 2C 2H-μ)][Co 2(CO) 6] 2b have been determined by single crystal X-ray diffraction methods.