FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2069308676> ?p ?o ?g. }

• W2069308676 endingPage "1545" @default.
• W2069308676 startingPage "1534" @default.
• W2069308676 abstract "The imidazolin-2-iminato tungsten alkylidyne complexes [Me3CC≡W(NImR)(OR′)2] (4a: R = tBu, R′ = CMe3; 4b: R = Dipp, R′ = CMe3; 5a: R = tBu, R′ = CMe(CF3)2; 5b: R = Dipp, R′ = CMe(CF3)2 have been prepared from [Me3CC≡W(OCMe3)3] (2) and [Me3CC≡W{OCMe(CF3)2}3(dme)] (3, dme = 1,2-dimethoxyethane) by reaction with the lithium reagents Li(NImtBu) and Li(NImDipp), generated with MeLi from 1,3-di-tert-butylimidazolin-2-imine (ImtBuNH) or 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-imine (ImDippNH), respectively. Reaction of 3 with Li[N(tBu)Ar]·OEt2 (Ar = 3,5-dimethylphenyl) afforded the amido complex [Me3CC≡W{N(tBu)Ar}{OCMe(CF3)2}2] (6). Addition of Li[OCPh(CF3)2] to [Me3CC≡WCl3(dme)] (1) produced the dme-free complex [Me3CC≡W{OCPh(CF3)2}3] (7), which, upon treatment with Li(NImtBu), gave the alkylidene complex 8, presumably formed by activation and addition of an ortho-C−H bond across the W≡C bond in the intermediate alkylidyne complex. Treatment of 1 with Li[OC(CF3)3] led to the substitution of only two chloride ligands and formation of cis-[Me3CC≡WCl{OC(CF3)3}2(dme)] (9), which exhibits long-range through-space 19F−19F coupling between the fluorine atoms of the two OC(CF3)3 ligands. Reaction of 9 with Li(NImtBu) resulted in partial cleavage of the ImtBuN ligand and ligand redistribution to afford the dinuclear tungsten alkylidyne complex 10. The propylidyne complex [EtC≡W(NImtBu){OCMe(CF3)2}2] (12) was obtained by treatment of 5a with 3-hexyne, which proceeded via the metallacyclobutadiene complex 11. Complex 5a is able to rapidly catalyze alkyne cross-metathesis of 3-heptyne to give a statistical 1:2:1 mixture of 3-hexyne, 3-heptyne and 4-octyne. The catalytic homodimerization of 1-phenylpropyne under vacuum-driven conditions was studied for 5a, 5b and 6 at 30 and 80 °C. The molecular structures of complexes 2, 3, 4a, 4b, 5b, 8, 9, 10 and 12 were determined by single crystal X-ray diffraction. High-level DFT calculations employing the B3LYP functional have been carried out for a series of experimentally studied and other alkylidyne complexes by choosing alkyne metathesis of 2-butyne as the model reaction." @default.
• W2069308676 created "2016-06-24" @default.
• W2069308676 creator A5008717290 @default.
• W2069308676 creator A5015960905 @default.
• W2069308676 creator A5027284245 @default.
• W2069308676 creator A5036558577 @default.
• W2069308676 creator A5037534218 @default.
• W2069308676 creator A5037871429 @default.
• W2069308676 creator A5074524475 @default.
• W2069308676 creator A5089476171 @default.
• W2069308676 date "2009-01-26" @default.
• W2069308676 modified "2023-10-03" @default.
• W2069308676 title "Experimental and Theoretical Investigations of Catalytic Alkyne Cross-Metathesis with Imidazolin-2-iminato Tungsten Alkylidyne Complexes" @default.
• W2069308676 cites W1519629411 @default.
• W2069308676 cites W1586345643 @default.
• W2069308676 cites W1800968542 @default.
• W2069308676 cites W1910047517 @default.
• W2069308676 cites W1964837435 @default.
• W2069308676 cites W1965690181 @default.
• W2069308676 cites W1969051598 @default.
• W2069308676 cites W1969203278 @default.
• W2069308676 cites W1969255006 @default.
• W2069308676 cites W1970071140 @default.
• W2069308676 cites W1972126468 @default.
• W2069308676 cites W1973898708 @default.
• W2069308676 cites W1977152297 @default.
• W2069308676 cites W1978347674 @default.
• W2069308676 cites W1981430544 @default.
• W2069308676 cites W1983834139 @default.
• W2069308676 cites W1986096114 @default.
• W2069308676 cites W1987318928 @default.
• W2069308676 cites W1987579676 @default.
• W2069308676 cites W1989455944 @default.
• W2069308676 cites W1990492750 @default.
• W2069308676 cites W1992815284 @default.
• W2069308676 cites W1994550049 @default.
• W2069308676 cites W1999214982 @default.
• W2069308676 cites W2001840778 @default.
• W2069308676 cites W2002159747 @default.
• W2069308676 cites W2005669571 @default.
• W2069308676 cites W2007522509 @default.
• W2069308676 cites W2008008366 @default.
• W2069308676 cites W2015421308 @default.
• W2069308676 cites W2015723183 @default.
• W2069308676 cites W2016504200 @default.
• W2069308676 cites W2018583239 @default.
• W2069308676 cites W2019517132 @default.
• W2069308676 cites W2022171448 @default.
• W2069308676 cites W2022193195 @default.
• W2069308676 cites W2023271753 @default.
• W2069308676 cites W2024007813 @default.
• W2069308676 cites W2025116586 @default.
• W2069308676 cites W2026982971 @default.
• W2069308676 cites W2027445631 @default.
• W2069308676 cites W2030200736 @default.
• W2069308676 cites W2030340979 @default.
• W2069308676 cites W2030841140 @default.
• W2069308676 cites W2034986419 @default.
• W2069308676 cites W2037588333 @default.
• W2069308676 cites W2038096192 @default.
• W2069308676 cites W2038539718 @default.
• W2069308676 cites W2042558692 @default.
• W2069308676 cites W2042724810 @default.
• W2069308676 cites W2047785514 @default.
• W2069308676 cites W2054036756 @default.
• W2069308676 cites W2056266749 @default.
• W2069308676 cites W2059001733 @default.
• W2069308676 cites W2061776255 @default.
• W2069308676 cites W2061824080 @default.
• W2069308676 cites W2063049222 @default.
• W2069308676 cites W2065077283 @default.
• W2069308676 cites W2068285512 @default.
• W2069308676 cites W2070932217 @default.
• W2069308676 cites W2071243741 @default.
• W2069308676 cites W2071450202 @default.
• W2069308676 cites W2072740967 @default.
• W2069308676 cites W2075072091 @default.
• W2069308676 cites W2075883844 @default.
• W2069308676 cites W2079002474 @default.
• W2069308676 cites W2081335056 @default.
• W2069308676 cites W2084376673 @default.
• W2069308676 cites W2086591041 @default.
• W2069308676 cites W2086957099 @default.
• W2069308676 cites W2087301898 @default.
• W2069308676 cites W2089462614 @default.
• W2069308676 cites W2093829666 @default.
• W2069308676 cites W2095505023 @default.
• W2069308676 cites W2098355812 @default.
• W2069308676 cites W2104057453 @default.
• W2069308676 cites W2106182782 @default.
• W2069308676 cites W2109536273 @default.
• W2069308676 cites W2116741024 @default.
• W2069308676 cites W2125185989 @default.
• W2069308676 cites W2127160474 @default.
• W2069308676 cites W2134813213 @default.
• W2069308676 cites W2136124374 @default.
• W2069308676 cites W2140309126 @default.
• W2069308676 cites W2141992921 @default.

• next