Iron(I) and Iron(II) Boxmi Pincer Complexes: Coordination Chemistry and Catalytic Hydroboration of Nitriles

被引:0
作者
Buergy, David [1 ]
Blasius, Clemens K. [1 ]
Bruckhoff, Tim [1 ]
Maurmann, Jonas [1 ]
Wadepohl, Hubert [1 ]
Ballmann, Joachim [1 ]
Gade, Lutz H. [1 ]
机构
[1] Heidelberg Univ, Anorgan Chem Inst, D-69120 Heidelberg, Germany
关键词
PARAMAGNETIC-SUSCEPTIBILITY; TRANSITION-METAL; H BOND; DIHYDROBORATION; MECHANISM; ALKYNES; SCOPE; HYDROSILYLATION; PRECATALYSTS; ACTIVATION;
D O I
10.1021/acs.organomet.5c00134
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Iron(II) alkyl complexes of a terdentate bisoxazoline pincer ligand ("boxmi") were synthesized, structurally characterized, and applied as precatalysts in the hydroboration of nitriles. By limiting the amount of borane, dinitriles could be partially hydroborated to selectively give the aminonitriles. Iron(I) complexes stabilized by dimerization were identified as an off-cycle species of the catalysis and characterized. Reactivity studies showed the iron(I) dimer reacting with ligands possessing at least some pi-acceptor character, such as pyridine, Ph-C C-Ph and CO, to form monomeric adduct complexes that were isolated and structurally characterized.
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页数:9
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