One-dimensional arrangements of metal atoms in transition metal carbonyl complexes of mixed main group metal alkoxides

Abstract

Mixed metal alkoxides containing main group elements with ns 2 electron configurations of the general formula M(O tBu) 3M′ (M = In, Tl; M′ = Ge, Sn, Pb), M′(O tBu) 3M(O tBu) 3M′ (M = divalent metal atom, M′ = Ge, Sn) and (O tBu)M′(O tBu) 2M(O tBu) 2M′(O tBu) (M = Co, Ni; M′ = Ge, Sn) can be reacted with simple metal carbonyls. The products obtained are composed of a one-dimensional array of metal atoms held together by direct metal-metal bonds or by bridging alkoxide groups. The following compounds have been isolated and characterized by IR and NMR spectroscopy and X-ray diffraction (M′ = Ge, Sn, Pb; M = In, Tl; M T = transition metal): M′(O tBu) 3M−M T(CO) n , (CO) n M T−M(O tBu) 3M′−M T(CO) n , M′(O tBu) 3M−M T(CO) n M(O tBu) 3M′, (CO) n M T−M′(O tBu) 3M(O tBu) 3M′−M T(CO) n , (CO) n M T−M′[O tBu](O tBu) 2M(O tBu) 2M(O tBu) 2[O tBu]M′−M T(CO) n and (CO) n M T−M′(O tBu) 3M−M T(CO) n M(O tBu) 3M′−M T(CO) n . In addition, an oligomeric species of the general formula [Sn(O tBu) 3In−Mo(CO) 4] n −Sn(O tBu) 3In−Mo(CO) 5 with n ≈ 9, 10 has been isolated.