Interactions of a Diplumbyne with Dinuclear Transition Metal Carbonyls to Afford Metalloplumbylenes

Abstract

The metathesis reactions of the diplumbyne Ar iPr6 PbPbAr iPr6 (Ar iPr6 = -C 6 H 3 -2,6-(C 6 H 2 -2,4,6-i Pr 3 ) 2 ) with the dinuclear metal carbonyls Mn 2 (CO) 10 , Fe 2 (CO) 9 , Co 2 (CO) 8 under mild conditions afforded the complexes Mn(CO) 5 (PbAr iPr6 ) (1), Fe(CO) 4 (PbAr iPr6 ) 2 (2), Co 4 (CO) 9 (PbAr iPr6 ) 2 (3), respectively. Complexes 1-3 were structurally characterized by single-crystal X-ray diffraction, and by 1 H, 13 C{ 1 H}, 59 Co{ 1 H}, and 207 Pb{ 1 H} NMR, UV-Vis, and IR spectroscopy. They are rare examples of species formed by the direct reaction of a group 14 dimetallyne with transition metal carbonyls. Complexes 1 and 2 feature Mn-Pb or Fe-Pb single bonds whereas in 3 a Co-Pb cluster is formed in which the plumbylidyne moiety bridges either an edge or a face of a Co 4 carbonyl cluster. Crystal data for CCDC 2018923 (CIF) Crystal data for CCDC 2018925 (CIF) Crystal data for CCDC 2027035 (CIF) Optimized Cartesian coordinates (XYZ) Accession Codes