Cyclometalated titanium and zirconium complexes stabilised by a new silylmethylene-linked tetradentate triamidophosphine.
Cyclometalated titanium and zirconium complexes stabilised by a new silylmethylene-linked tetradentate triamidophosphine.
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由新型甲硅烷基亚甲基连接的四齿三酰胺膦稳定的环金属化钛和锆配合物
DOI:
10.1039/c5dt04561d
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发表时间:
2016
影响因子:
4
通讯作者:
J. Ballmann
中科院分区:
文献类型:
--
作者:
M. Sietzen;P. Federmann;C. Sonnenschein;H. Wadepohl;J. Ballmann
The silylmethylene-linked triamidophosphine P(CH2SiMe2NHPh)3 was isolated in form of its tri-lithium salt Li3[P(CH2SiMe2NPh)3]·2.5Et2O (1·2.5Et2O) and employed for the synthesis of titanium and zirconium complexes. Starting from 1·2.5Et2O, the chlorido complexes [κ4-N,N,N,P-PN3]MCl (4-M, M = Ti, Zr) were prepared and examined with respect to alkylation. Upon reaction of 4-Ti with (trimethylsilyl)methyl lithium, intra-ligand cyclometalation at one of the ortho-N-phenyl positions was observed and the resulting thermally stable titanazetidine [κ5-N,N,N,P,C-N2P(NC)]Ti (5-Ti) isolated. Similarly, the related zirconazetidine [κ5-N,N,N,P,C-N2P(NC)]Zr(THF) (5-Zr) was isolated upon reaction of 4-Zr with Bn2Mg(THF)2. Using LiCH2PMe2 as alkyl transfer reagent, both complexes 4-M were converted to the corresponding phosphametallacyclopropanes [κ4-N,N,N,P-PN3]M(κ2-C,P-CH2PMe2) (7-M, M = Ti, Zr). Upon gentle heating, complexes 7-M were cleanly converted to the cyclometalated species 5-M and trimethylphosphine. These results are discussed in the context of related amidophosphine and triamidoamine complexes.
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DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
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通讯作者:
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影响因子:
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通讯作者:
DAVIS, WM
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
R. Shinomoto;P. Desrosiers;T. P. Harper;T. Flood
通讯作者:
T. Flood
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
V. C. Gibson;C. Graimann;Philip M. Hare;Malcolm L. H. Green;J. Bandy;P. Grebenik;K. Prout
通讯作者:
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