부산대학교 도서관

The reaction between (η⁵-C5H4I)Fe(CO)2CH3 (2) and 2,5-bis[(trimethylstannyl)ethynyl]thiophene in the presence of palladium affords the iron dimer CH3(CO)2Fe(η⁵-C5H4)C&tbd1; CC&dbd;CHSCH&dbd;CC&tbd1;C(η⁵-C5H4)Fe(CO)2CH3 (4), which upon treatment with I2 is transformed to the corresponding diiodide I(CO)2Fe(η⁵-C5H4)C&tbd1;CC&dbd;CHSCH&dbd;CC&tbd1;C(η⁵-C5H4)Fe(CO)2I (5). Reaction of the latter, in the presence of palladium, with the (trimethylstannyl)acetylide derivatives LnM(η⁵-C5H4)C&tbd1;CC&dbd;CHSCH&dbd;CC&tbd1;CSn(CH3)3 (9a, MLn = W(CO)3CH3, 9b, MLn = Re(CO)3) affords the polymetallaacetylide tethers LnM(η⁵-C5H4)C&tbd1;CC&dbd;CHSCH&dbd;CC&tbd1;CFe(CO)2(η⁵-C5H4)C&tbd1;CC&dbd;CHSCH&dbd;CC&tbd1;C(η⁵-C5H4)(CO)2FeC&tbd1;CC&dbd;CHSCH&dbd;CC&tbd1;C(η⁵-C5H4)MLn (10, MLn = W(CO)3CH3; 11, MLn = Re(CO)3). Trimethyltin derivatives of poly(ethynylthiophene) oligomers have been also prepared and tested for their use as spacers in poly(metallaacetylide) complexes.