A second monoclinic polymorph of {bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H⋯Co agostic interaction
نویسندگان
چکیده
The title compound, [Co(C(10)H(10)BF(6)N(4))(C(15)H(13)BF(9)N(6))], is a polymorph of the previously reported neutral cobalt(II) complex [Stibrany & Potenza (2010 ▶). Acta Cryst. E66, m506-m507], which contains one each of the monoanionic ligands, bis-[5-methyl-3-(trifluoro-meth-yl)pyrazol-1-yl]borate (Bp) and tris-[5-methyl-3-(trifluoro-meth-yl)pyrazol-1-yl]borate (Tp). A distorted octahedral coordination geometry of the Co(II) atom results from ligation of an H atom, which is part of an agostic B-H⋯Co inter-action [H⋯Co = 2.12 (3) Å], and by five imine N atoms, two from a Bp ligand and three from a Tp ligand. Weak intra- and inter-molecular C-F⋯π inter-actions with F⋯centroid distances ranging from 3.025 (4) to 3.605 (4) Å are observed.
منابع مشابه
{Bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H⋯Co agostic interaction
The title compound, [Co(C(10)H(10)BF(6)N(4))(C(15)H(13)BF(9)N(6))], is a neutral Co(II) complex which contains one each of the anionic ligands, bis-(3-trifluoro-methyl-5-methyl-pyrazol-1-yl)borate (Bp) and tris-(3-trifluoro-methyl-5-methyl-pyrazol-1-yl)borate (Tp). A distorted octa-hedral coordination geometry results from ligation of an H atom, which is part of an agostic B-H⋯Co inter-action (...
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The title compound, [Fe(C(9)H(10)BN(6))(2)], is a polymorph of a compound reported previously [Oliver et al. (1980 ▶). Inorg. Chem.19, 165-168]. In the previous report, the compound crystallized in the monoclinic space group P2(1)/c (Z = 4), whereas the crystal symmetry of the compound reported here is tetra-gonal (P4(2)/ncm, Z = 4). The mol-ecular structure is comprised of two hydro-tris-(1-py...
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The asymmetric unit of the title compound, [Co(C(10)H(16)BN(4))(2)], comprises one unit of the complex. The geometry around the Co(II) ion is a distorted tetra-hedron. The dihedral angles between the pyrazole rings in the two ligands are 47.19 (15) and 47.20 (16)°, while that between the coordination planes is 79.77 (7)°.
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The molecule of the title compound, C(12)H(8)ClF(3)N(4)O, is twisted as indicated by the C-O-C-C torsion angle of 76.9 (3)°. Moreover, the trifluoro-methyl group shows rotational disorder of the F atoms, with site-occupancy factors of 0.653 (6) and 0.347 (6). The dihedral angle between the rings is 1.88 (12) Å.
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عنوان ژورنال:
دوره 67 شماره
صفحات -
تاریخ انتشار 2011