A second monoclinic polymorph of {bis-[5-methyl-3-(trifluoro-meth-yl)pyrazol-1-yl]borato}{tris-[5-methyl-3-(trifluoro-meth-yl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B-H⋯Co agostic inter-action

钴(II)的第二种单斜晶型物：含BH⋯Co弱相互作用的结构