V(CO)6 reacts with sources of the cyclopentadienyl anion to give the orange four-legged piano stool complex (C5H5)V(CO)4 (m.p. 136 °C).
V(CO)6 reacts with sources of the cyclopentadienyl anion to form the orange four-legged piano stool complex (C5H5)V(CO)4, which has a melting point of 136 °C.