Implications for the Thin-Film Densification of TiO<sub>2</sub> from Carboxylic Acid-Modified Titanium Alkoxides. Syntheses, Characterizations, X-ray Structures of Ti<sub>3</sub>(μ<sub>3</sub>-O)(O<sub>2</sub>CH)<sub>2</sub>(ONep)<sub>8</sub>, Ti<sub>3</sub>(μ<sub>3</sub>-O)(O<sub>2</sub>CMe)<sub>2</sub>(ONep)<sub>8</sub>, Ti<sub>6</sub>(μ<sub>3</sub>-O)<sub>6</sub>(O<sub>2</sub>CCHMe<sub>2</sub>)<sub>6</sub>(ONep)<sub>6</sub>, [Ti(μ-O<sub>2</sub>CCMe<sub>3</sub>)(ONep)<sub>3</sub>]<sub>2</sub>, and Ti<sub>3</sub>(μ<sub>3</sub>-O)(O<sub>2</sub>CCH<sub>2</sub>CMe<sub>3</sub>)<sub>2</sub>(ONep)<sub>8</sub> (ONep = OCH<sub>2</sub>CMe<sub>3</sub>)<sup>1</sup>
作者:Timothy J. Boyle、Ryan P. Tyner、Todd M. Alam、Brian L. Scott、Joseph W. Ziller、B. G. Potter
DOI:10.1021/ja992521w
日期:1999.12.1
(HO2CCMe3), or HONc (HO2CCH2CMe3)] were identified by single-crystal X-ray diffraction and solid-state 13C MAS NMR spectroscopy as Ti3(μ3-O)(OFc)2(ONep)8 (2), Ti3(μ3-O)(OAc)2(ONep)8 (3), Ti6(μ3-O)6(OPc)6(ONep)6 (4), Ti2(μ-OBc)2(ONep)6 (5), and Ti3(μ3-O)(ONc)2(ONep)8 (6). Compounds 2, 3, and 6 adopt a triangular arrangement of Ti atoms linked by a μ3-oxide moiety with ORc and ONep ligands supporting
使用羧酸 (HORc) 改性的 Ti(OR)4 产物来研究具有显着不同结构的类似连接物质对所得陶瓷(在这种情况下为 TiO2)的最终致密化的影响。从 [Ti(μ-ONEp)(ONEp)3]2 (1, ONep = OCH2CMe3) 和各种空间位阻羧酸 [HORC: HOFc (HO2CH), HOAc (HO2CCH3 )、HOPc (HO2CCHMe2)、HOBc (HO2CCMe3) 或 HONc (HO2CCH2CMe3)] 通过单晶 X 射线衍射和固态 13C MAS NMR 光谱鉴定为 Ti3(μ3-O)(OFc)2(ONEp) 8 (2), Ti3(μ3-O)(OAc)2(ONEp)8 (3), Ti6(μ3-O)6(OPc)6(ONEp)6 (4), Ti2(μ-OBc)2( ONep)6 (5) 和 Ti3(μ3-O)(ONc)2(ONEp)8 (6)。化合物 2、3、和