The preparation and crystal structure of (η5-C5H5)(OC)3Mo(CH2)3C6H5

The reaction of (η5-C5H5)Mo(CO)3- with p-CH3C6H4S(O)2O(CH2)3C6H5 produces (η5-C5H5)(OC)3Mo(CH2)3C6H5. This is only the second structurally characterized organometallic species in which an aromatic moiety is separated by three or more methylene groups. The alkyl chain adopts a staggered conformation, the Mo–C(1)–C(2)–C(3)–C(4) unit is nearly coplanar, and the alkyl chain eclipses the trans-carbonyl group on Mo. NMR evidence indicates that this conformation is preserved in solution.

The reaction of (η5-C5H5)Mo(CO)3- with p-CH3C6H4S(O)2O(CH2)3C6H5 produces (η5-C5H5)(CO)3Mo(CH2)3C6H5. The alkyl chain adopts a staggered conformation, the Mo–C(1)–C(2)–C(3)–C(4) unit is nearly coplanar, and the alkyl chain eclipses the trans-carbonyl group on Mo. NMR evidence indicates that this conformation is preserved in solution.Figure optionsDownload as PowerPoint slide