Synthesis and ROMP Chemistry of Decafluoroterphenoxide Molybdenum Imido Alkylidene and Ethylene Complexes
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https://figshare.com/articles/dataset/Synthesis_and_ROMP_Chemistry_of_Decafluoroterphenoxide_Molybdenum_Imido_Alkylidene_and_Ethylene_Complexes/2411845
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资源简介：
The bisDFTO alkylidene complexes
of molybdenum Mo(NR)(CHCMe2Ph)(DFTO)2 (R = 2,6-i-Pr2C6H3, 2,6-Me2C6H3, C6F5, 1-adamantyl; DFTO = 2,6-(C6F5)2C6H3O) and
monoaryloxide
monopyrrolide (MAP) complexes Mo(NR)(CHCMe2Ph)(Me2Pyr)(OAr) (Me2Pyr = 2,5-dimethylpyrrolide; R = C6F5, OAr
= DFTO, 2,6-dimesitylphenoxide (HMTO); R = 2,6-Me2C6H3, OAr = DFTO) have been prepared in good yields.
Addition of dicarbomethoxynorbornadiene (DCMNBD) to bisDFTO complexes
yielded polymers that have a cis,isotactic structure.
Polymerization of DCMNBD by Mo(NC6F5)(CHCMe2Ph)(Me2Pyr)(HMTO) gives a polymer that contains
the expected cis,syndiotactic structure, but polymerization
of DCMNBD by Mo(NR)(CHCMe2Ph)(Me2Pyr)(DFTO)
(R = C6F5, 2,6-Me2C6H3) generates a polymer that has a cis,isotactic structure, the first observation of a cis,isotactic polymer prepared employing a MAP initiator. Norbornene is polymerized
to give what is proposed to be highly tactic cis-polyNBE.
Addition of ethylene to Mo(NC6F5)(CHCMe2Ph)(DFTO)2 leads to formation of Mo(NC6F5)(CH2CH2)(DFTO)2, which
also behaves as an initiator for polymerization of DCMNBD to cis,isotactic-polyDCMNBD and norbornene to cis highly tactic polyNBE. Mo(NC6F5)(CH2CH2)(DFTO)2 reacts with 3-methyl-3-phenylcyclopropene
(MPCP) to give Mo(NC6F5)(CHCHCMePh)(DFTO)2 in ∼50% yield.
创建时间：
2016-02-19
