Matches in SemOpenAlex for { <https://semopenalex.org/work/W2075648701> ?p ?o ?g. }
- W2075648701 endingPage "4647" @default.
- W2075648701 startingPage "4639" @default.
- W2075648701 abstract "Reaction of trans-(dmpe) 2CrCl2 (dmpe=1,2-bis(dimethylphosphino)ethane) with one equivalent of LiCCSiMe3 and one equivalent of nBuLi in THF under a dinitrogen atmosphere affords dark orange trans,trans-[(Me 3SiCC)(dmpe)2Cr]2(micro-N2).hexane (1). Under similar conditions but in the absence of acteylide ligand, the reaction of trans-(dmpe)2CrCl2 with 2 equivalents of nBuLi yields the previously characterized complex trans-(dmpe)2Cr(N2)2 (2), while the reaction of trans-(dmpe)2CrCl2 with 2 equivalents of LiCCSiMe3 in THF yields trans-(dmpe)2Cr(CCSiMe3)2 (3). Compound 3 can also be synthesized by irradiating a mixture of trans-(dmpe)2CrMe2 and HCCSiMe3 or by reduction of HCCSiMe3 with compound 2. The magnetic properties, electrochemistry, and crystal structure of trans,trans-[(Me3SiCC)(dmpe)2Cr]2(micro-N2) are consistent with the complex containing two CrI ions bridged by a neutral N2 moiety, with a 1.178(10) A N[TRIPLE BOND]N bond distance. For complex 1 redox processes centered at E1/2=-1.69 V (DeltaEp=185 mV) and -1.43 V (DeltaEp=182 mV) versus Fe(Cp)2/Fe(Cp)2+ are assigned to the CrICrI/CrICrII and CrICrII/CrIICrII couples, respectively. For trans-(dmpe)2Cr(CCSiMe3)2 a reversible couple assigned as the CrII/III couple was observed at -1.59 V (DeltaEp=242 mV) versus Fe(Cp)2/Fe(Cp)2+. The dinuclear CrI-dinitrogen complex 1 has a room temperature magnetic moment of 2.77 microB while compound 3 displays a moment of 2.55 microB. Density-functional theory calculations performed on a model compound of 1, namely, trans,trans-[(HCC)(dpe)2Cr]2(micro-N2) (dpe=diphospinoethane), indicate that oxidation of the molecule should result in weakening of the dinitrogen triple bond." @default.
- W2075648701 created "2016-06-24" @default.
- W2075648701 creator A5072874908 @default.
- W2075648701 creator A5074504010 @default.
- W2075648701 date "2008-05-06" @default.
- W2075648701 modified "2023-09-25" @default.
- W2075648701 title "Dinitrogen and Acetylide Complexes of Low-Valent Chromium" @default.
- W2075648701 cites W1604359917 @default.
- W2075648701 cites W1721183612 @default.
- W2075648701 cites W1966182479 @default.
- W2075648701 cites W1967392043 @default.
- W2075648701 cites W1968356804 @default.
- W2075648701 cites W1969091390 @default.
- W2075648701 cites W1969282713 @default.
- W2075648701 cites W1969958859 @default.
- W2075648701 cites W1974370161 @default.
- W2075648701 cites W1975462905 @default.
- W2075648701 cites W1978025098 @default.
- W2075648701 cites W1979676650 @default.
- W2075648701 cites W1984515277 @default.
- W2075648701 cites W1988448564 @default.
- W2075648701 cites W1989555721 @default.
- W2075648701 cites W1989726966 @default.
- W2075648701 cites W1990183718 @default.
- W2075648701 cites W1990642201 @default.
- W2075648701 cites W1991704056 @default.
- W2075648701 cites W1993257305 @default.
- W2075648701 cites W1996224669 @default.
- W2075648701 cites W1997021150 @default.
- W2075648701 cites W1997029337 @default.
- W2075648701 cites W1997668513 @default.
- W2075648701 cites W2000506283 @default.
- W2075648701 cites W2006736106 @default.
- W2075648701 cites W2007522509 @default.
- W2075648701 cites W2010188381 @default.
- W2075648701 cites W2012556554 @default.
- W2075648701 cites W2013368927 @default.
- W2075648701 cites W2013994877 @default.
- W2075648701 cites W2019688607 @default.
- W2075648701 cites W2020432903 @default.
- W2075648701 cites W2020835731 @default.
- W2075648701 cites W2021518855 @default.
- W2075648701 cites W2022569119 @default.
- W2075648701 cites W2023814136 @default.
- W2075648701 cites W2024784916 @default.
- W2075648701 cites W2028510889 @default.
- W2075648701 cites W2028597898 @default.
- W2075648701 cites W2028739486 @default.
- W2075648701 cites W2031037342 @default.
- W2075648701 cites W2031154414 @default.
- W2075648701 cites W2031294284 @default.
- W2075648701 cites W2033990154 @default.
- W2075648701 cites W2036766696 @default.
- W2075648701 cites W2044229492 @default.
- W2075648701 cites W2044490585 @default.
- W2075648701 cites W2046412723 @default.
- W2075648701 cites W2048110396 @default.
- W2075648701 cites W2048458635 @default.
- W2075648701 cites W2049312154 @default.
- W2075648701 cites W2053434737 @default.
- W2075648701 cites W2053459301 @default.
- W2075648701 cites W2054235140 @default.
- W2075648701 cites W2054409880 @default.
- W2075648701 cites W2054599743 @default.
- W2075648701 cites W2057069983 @default.
- W2075648701 cites W2057430816 @default.
- W2075648701 cites W2057687222 @default.
- W2075648701 cites W2058363175 @default.
- W2075648701 cites W2059784868 @default.
- W2075648701 cites W2061096233 @default.
- W2075648701 cites W2061692632 @default.
- W2075648701 cites W2063750789 @default.
- W2075648701 cites W2063917761 @default.
- W2075648701 cites W2066985810 @default.
- W2075648701 cites W2067094302 @default.
- W2075648701 cites W2068617439 @default.
- W2075648701 cites W2070145366 @default.
- W2075648701 cites W2073636676 @default.
- W2075648701 cites W2079446896 @default.
- W2075648701 cites W2079762069 @default.
- W2075648701 cites W2083853301 @default.
- W2075648701 cites W2088808714 @default.
- W2075648701 cites W2093097204 @default.
- W2075648701 cites W2093149894 @default.
- W2075648701 cites W2094642658 @default.
- W2075648701 cites W2097492211 @default.
- W2075648701 cites W2099037802 @default.
- W2075648701 cites W2126673723 @default.
- W2075648701 cites W2152223959 @default.
- W2075648701 cites W2154897627 @default.
- W2075648701 cites W2497007159 @default.
- W2075648701 cites W2572334410 @default.
- W2075648701 cites W274377105 @default.
- W2075648701 cites W2949108817 @default.
- W2075648701 cites W2949846648 @default.
- W2075648701 cites W2951261768 @default.
- W2075648701 cites W2965597320 @default.
- W2075648701 cites W3020848186 @default.