Selenium-bridged clusters. Synthesis and structural characterization of molybdenum-iron-selenium cluster Cp2Mo2Fe2(.mu.4-Se)(.mu.3-Se)2(CO)6

Abstract

Thermolysis of Fe2(CO)6{mu-SeC(Ph)=C(H)Se} (1) and Cp2Mo2(CO)6 (2) yields the new cluster Cp2Mo2Fe2(mu4-Se)(mu3-Se)2(CO)6 (3) and Cp2Mo2(CO)4(PhCCH) (4). Structural characterization of 3 shows an unusual mu4-Se ligand bridging the two wing-tip Fe atoms and the two hinge Mo atoms of the Mo2Fe2 butterfly-tetrahedron core.