{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

Abstract

The title compound, [Co(C10H10BF6N4)(C15H13BF9N6)], is a neutral CoII complex which contains one each of the anionic ligands, bis(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Bp) and tris(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Tp). A distorted octahedral coordination geometry results from ligation of an H atom, which is part of an agostic B—H...Co interaction (H...Co = 2.17 Å), and by five imine N atoms, two from a Bp ligand and three from a Tp ligand. In the crystal, molecules form layers parallel to the (10overline{1}) planes, and the layers are linked along the a axis by C—H...F hydrogen bonds. An intramolecular C—H...F interaction also occurs.