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{(R,S(Fc),S(Fc))-2''-Bromo-2-[1-(dimethyl-amino)-ethyl-?N]-1,1''-biferrocene}trihydridoboron.


ABSTRACT: The title structure, [Fe(2)(C(5)H(5))(2)(C(14)H(19)BBrN)], contains a chiral and asymmetrically 2,2''-disubstituted biferrocene designed as precursor for enanti-oselective non-C(2)-symmetric biferrocenyldiphosphine catalysts. The mean bond lengths in the biferrocene unit are Fe-C = 2.048?(10)?Å and C-C = 1.427?(8)?Å within the cyclo-penta-dienyl rings. The B-N bond lengths of the BH(3) protected amine is 1.631?(3)?Å. The inter-planar angle between the two connected cyclo-penta-dienyl rings is 54.29?(8)° and the corresponding Fe-Cg-Cg-Fe torsion angle is -52.5°. The conformation of the mol-ecule is stabilized by an intra-molecular C-H?Br inter-action.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC3238712 | BioStudies | 2011-01-01T00:00:00Z

REPOSITORIES: biostudies

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