Synthesis,X-ray structure and reactivity of μ-(CF3COO)2-[Mo(N-2,6-i-Pr2-C6H3)(CHCMe2Ph)(OOCCF3)(Et2O)]2, the first Bis(trifluoroacetate) derivative of a Schrock catalyst |
| |
| Institution: | 1. Leibniz Institut für Oberflächenmodifizierung (IOM) e. V., Permoserstr. 15, D-04318 Leipzig, Germany;2. Institut für Technische Chemie, Universität Leipzig, Linnéstr. 3, D-04103 Leipzig, Germany;3. Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 52 a, A-6020 Innsbruck, Austria;1. Tarragona, Spain;2. Riverside, CA, USA;1. College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455002, PR China;2. Chemistry and Chemical Engineering School, Henan University of Technology, Zhengzhou 450001, PR China |
| |
| Abstract: | Reaction of Mo(N-2,6-i-Pr2-C6H3)(CHCMe2C6H5)(OSO2CF3)(DME) (DME = 1,2-dimethoxyethane) with 2 equiv. of CF3COOK yields μ-(CF3COO)2-Mo(N-2,6-i-Pr2-C6H3)(CHCMe2Ph)(OOCCF3)(Et2O)]2 (1). Compound 1 crystallizes in the orthorhombic space group Pna21 with a = 17.2485(3), b = 17.0336(3), c = 25.4031(5) Å, α = β = γ = 90°, V = 7463.5(2) Å3, Z = 4. In contrast to alkoxide based Schrock type initiators, 1 is virtually inactive in numerous metathesis reactions including ring-closing metathesis (RCM) and homo metathesis reactions, the cyclopolymerization of 1,6-heptadiynes, and even ring-opening metathesis polymerization (ROMP) of norborn-2-ene. However, addition of quinuclidine results in the in situ formation of 1a (Mo(N-2,6-i-Pr2-C6H3)(CHCMe2C6H5)(OOCCF3)2(quinuclidine) which displays moderate activity in ROMP, cyclopolymerization of 1,6-heptadiynes and RCM. Theoretical investigations carried out on the B3LYP/LACVP1 level provide substantial explanation for these findings. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
