n⁵-Cp ring 1) Draw C-C bonds as aromatic bonds; 2)bonds from metal to Cp ring are pi bonds only one M-Cp bond is necessary

n¹ Cp ring 1) draw localized Cp with two double bonds and one radical carbon. 2) Draw M-C single bond to unique carbon.

n³ Cp ring 1) draw Cp ring with one C-C double bond and the remaining C linked by delocalized bonds. 2) Draw M-C pi bond to one of the delocalized carbons.

n³-allyl group 1) draw both C-C bonds as delocalized. 2) Draw M-C pi bonds to one of the delocalized carbons.

n¹-allyl group 1) draw one C-C single bond and one C-C double bond. 2) Draw one M-C single bond to unique C.

n⁵-cyclohexadienyl group 1) connect 5 C with delocalized bonds. 2) Draw one M-C pi bond a delocalized carbon.

n³-cyclohexadienyl group 1) connect 3 C with delocalized bonds and 2 C with a double bond. 2) Draw one M-C pi bond to a delocalized carbon.

n⁵-Cp ring 1) bond in Cp ring are localized (i.e., two double bond and one radical carbon) 2) bonds from metal to Cp are single bonds with one bond from the metal to each of the carbon atoms (that is 5 M-C bonds)