Starting from mono- and bifunctional ferrocene-based tris(1-pyrazolyl)borates, a novel route to oligonuclear complexes is presented, which incorporates transition metal centers differing substantially in their chemical nature, Both binuclear organometallics FcB(pz)(3)MLn (Fc : ferrocenyl. pz : 1-pyrazolyl, MLn : T1, 1-Tl; Mo(CO)(3)Li, 1-MoLi; Mo(CO)(2)(eta(3)-methylallyl), 1-Mo; ZrCl3, 1-Zr) and trinuclear complexes 1,1’-fc[B(pz)(3)MLn](2) (fc : ferrocenylene. MLn : T1, 2-Tl; Mo(CO)(3)Li, 2-MoLi; Mo(CO)(2)(eta(3)-methylallyl), 2-Mo) have been prepared. The trinuclear compound [FcB(4-SiMe(3)pz)(3)](2)Fe, 1-FeSi, has been investigated as a model system for organometallic coordination polymers, consisting of the bifunctional linker 1,1’-fc[B(Pz)(3)](2)(2-) and transition metal ions Mn+. X-ray crystallography shows 1-Tl to establish a polymeric structure in the solid state, while 1-Mo features the usual tridentate coordination mode of the scorpionate ligand (C25H25BFeMoN6O2; a = 8.756(1) Angstrom, b = 12.154(1) Angstrom, c = 12.927(1) Angstrom, alpha = 105.26(1)degrees, beta = 102.29(1)degrees, gamma = 1.05.09(1)degrees; triclinic space group ; Z = 2), With the exception of 1,2-Tl, the anodic oxidation of the ferrocene moiety is generally reversible; cyclic voltammetry measurements indicate the two Mo centers in 2-Mo and the two Fc moieties in 1-FeSi to be noncommunicating.