Mixed metal alkoxides containing main group elements with ns 2 electron configurations of the general formula M(O t Bu) 3 M (M = In, Tl; M = Ge, Sn, Pb), M (O t Bu) 3 M(O t Bu) 3 M (M = divalent metal atom, M = Ge, Sn) and (O t Bu)M (O t Bu) 2 M(O t Bu) 2 M (O t Bu) (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 t Bu) 3 M-M T (CO) n , (CO) n M T -M(O t Bu) 3 M -M T (CO) n , M (O t Bu) 3 M-M T (CO) n M(O t Bu) 3 M , (CO) n M T -M (O t Bu) 3 M(O t Bu) 3 M -M T (CO) n , (CO) n M T -M [O t Bu](O t Bu) 2 M(O t Bu) 2 M(O t Bu) 2 [O t Bu]M -M T (CO) n and (CO) n M T -M (O t Bu) 3 M -M T (CO) n M(O t Bu) 3 M -M T (CO) n . In addition, an oligomeric species of general formula [Sn(O t Bu) 3 In-Mo(CO) 4 ] n -Sn(O t Bu) 3 In-Mo(CO) 5 with n 9, 10 has been isolated.