[η5-(Phenylethynyl)cyclopentadienyl](η4-tetraphenylcyclobutadiene)cobalt(I)

[η5-(Phenylethynyl)cyclopentadienyl](η4-tetraphenylcyclobutadiene)cobalt(I)

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In the title compound, [Co(C13H9)(C28H20)], the Co atom is sandwiched between cyclopentadienyl and cyclobutadienyl rings that are inclined at a dihedral angle of 2.6 (3)°.The four Womens dress-shirts phenyl rings are tilted with respect to the cyclobutadienyl plane so that the C4Ph4 unit Two-Piece sets constitutes a four-bladed propeller.The phenyl ring of the phenyl-alkyne substituent is inclined to the cyclopentadienyl ring at an angle of 34.

92 (18)°.The crystal structure is stabilized solely by C—H.π interactions which generate a three-dimensional network.