Structure of a Heterobimetallic Alkoxide in a Highly Concentrated Ba, Ti Alkoxides Solution Prepared Using Methanol/2-Methoxyethanol Mixed Solvent

摘要

The molecular structure of a heterobimetallic alkoxide formed in a highly concentrated (1.2 mol/l) Ba,Ti alkoxides solution with methanol/2-methoxyethanol mixed solvent (60/40 in volume), which is suitable for preparation of BaTiO_3 ceramics via powderless sol-gel process, has been investigated using FT-IR, 1~H NMR, XANES and ICP-AES. Data obtained from the analyses indicate that reaction between barium ethoxide and titanium isopropoxide, used as the starting alkoxides, occurred to form a heterobimetallic alkoxide BaTi (OMe)_4 (OEt) (OEtOMe) with a Ba/Ti ratio of 1 in the highly concentrated alkoxides solution.