The reaction of InCl, with 1, 2 and 3 equiv of K [H2B (pz) J (pz= pyrazolyl ring) yields [H2B (pz) 2] InC12 (l),[H2B (pz) 2] 21nC1 (2), and [HzB (pz), 131n (3), respectively. The methyl complexes [H2B (p~) 2] 21nCH3 (4) and [H2B (pz),] In (CH3) C1 (5) are prepared from the reaction of CH31nC12 with 2 and 1 equiv of K [H2B (pz) 2], respectively. Complex 5 is also formed by an exchange reaction between (CH3) 21nCl and 2. The dimethyl complex [H, B ...