Table 3 Example of the representations chosen for some organometallic compounds

Tetracarbonyl nickel

[Ni](C#[O])(C#[O])(C#[O])C#[O]

A compound with bridging carbonyls

[Co]1(C#[O])(C#[O])(C#[O])C(=O)[Co] (C#[O])(C#[O])(C#[O])C1=O

An alkyl derivative

[Pb](CC)(CC)(CC)CC

A \(\eta ^2+\eta ^2\) ligand

[Rh]123[CH]4=[CH]1CC[CH]2=[CH]3CC4

A \(\eta ^4\) ligand

[Ti]123[CH2]=[CH]1[CH]2=[CH2]3

A compound with \(\eta ^3\) ligands

[Pd]1234(C[CH]1=[CH2]2)C[CH]3=[CH2]4

Ferrocene

[Fe]12345678([cH]9[cH]1[cH]2[cH]3[cH]4 9)[cH]1[cH]5[cH]6[cH]7[cH]81

A \(\eta ^5\)-indene ligand

[Zr]1234[cH]5[cH]1[cH]2[c]13[c]45cccc1

A \(\eta ^6\)-p-cymene ligand

[Ru]12345[c]6(C(C)C)[cH]1[cH]2[c]3(C) [cH]4[cH]56