Further studies of imido alkylidene complexes of tungsten, well-characterized olefin metathesis catalysts with controllable activity
作者:Richard R. Schrock、R. T. DePue、J. Feldman、K. B. Yap、D. C. Yang、W. M. Davis、L. Park、M. DiMare、M. Schofield
DOI:10.1021/om00158a025
日期:1990.8
Shekunova, V. M.; Sokolov, N. A.; Aleksandrov, Yu. A., Journal of general chemistry of the USSR, 1981, vol. 51, # 2, p. 239 - 242
作者:Shekunova, V. M.、Sokolov, N. A.、Aleksandrov, Yu. A.
DOI:——
日期:——
Hafnium Amide Complex Manufacturing Method and Hafnium-Containing Oxide Film
申请人:Ryokawa Atsushi
公开号:US20110230671A1
公开(公告)日:2011-09-22
Disclosed is a method of producing a hafnium amide complex represented by general formula: Hf(NR
4
R
5
)
4
, characterized by comprising: carrying out a reduced-pressure distillation after a lithium alkylamide represented by general formula: Li(NR
4
R
5
) is added to and allowed to react with a tertiary hafnium alkoxide complex represented by general formula: Hf[O(CR
1
R
2
R
3
)]
4
. (In the formulas, R
1
, R
2
and R
3
independently represent either a phenyl group, a benzyl group, or a primary, secondary or tertiary alkyl group having a carbon number 1-6; and R
4
and R
5
independently represent either a methyl group or an ethyl group; however, a case where all of R
1
, R
2
and R
3
are methyl groups, and a case where one of R
1
, R
2
and R
3
is an ethyl group and the other two are methyl groups are excluded.)