Assertion: ligand | /r/HasProperty | σ donors
Facets:
Source sentences:
text: Some ligands that possess no orbitals with symmetry appropriate for π bonding, such as ammonia, are σ donors only.
text: When bonding to a metal the ligand (in this case CO) sigma donates to an empty d-orbital and the filled d-orbitals of the metal donates to the empty pi* orbitals of CO, back donation.