The crystal structure of the bis-tricarbonylchromium complex of dibenzo[a,e]cyclooctatetraene: Cr(CO)3 orientation controlled by short C–H⋯O hydrogen bonding

摘要: Abstract The structure of the title compound, 1, was determined by X-ray crystallography. One tricarbonylchromium [syn-Cr(CO)3] moiety is bound to concave side dibenzo[a,e]cyclooctatetraene ligand while other metal convex yielding an anti-Cr(CO)3. There are four independent molecules in crystal with main difference between them being orientation Analysis intermolecular interactions solid state confirms that variable tripodal rotations result short C–H···O(carbonyl) hydrogen bonds. In organic framework has flattened slightly relative uncoordinated dibenzo[a,e]cyclooctatetraene.