Inorganic & Coordination Chemistry
12 terms
Central Metal Atom
The metal atom or ion at the heart of a coordination entity, which accepts electron pairs from the ligands.
Inorganic & Coordination ChemistryCharge Transfer Spectrum
An intense absorption produced when an electron moves between metal and ligand orbitals.
Inorganic & Coordination ChemistryChelate
A cyclic complex formed when a multidentate ligand grips a metal ion through two or more donor atoms.
Inorganic & Coordination ChemistryChelate Effect
The greater stability of a complex containing a multidentate ligand compared with one containing equivalent monodentate ligands.
Inorganic & Coordination ChemistryComplex Ion
A charged species consisting of a central metal ion surrounded by a definite number of ligands.
Inorganic & Coordination ChemistryCoordination Compound
A compound containing a central metal atom or ion bonded to surrounding molecules or ions by coordinate bonds.
Inorganic & Coordination ChemistryCoordination Isomerism
Isomerism in compounds containing both a complex cation and a complex anion, where ligands are distributed differently between them.
Inorganic & Coordination ChemistryCoordination Sphere
The central metal together with the ligands directly attached to it, written inside square brackets.
Inorganic & Coordination ChemistryCounter Ion
An ion outside the coordination sphere that balances the charge of the complex ion.
Inorganic & Coordination ChemistryCrystal Field Splitting Energy
The energy difference between the sets of d orbitals produced when a ligand field lifts their degeneracy.
Inorganic & Coordination ChemistryCrystal Field Stabilisation Energy
The net energy gained by a complex through the preferential occupation of lower-energy d orbitals.
Inorganic & Coordination ChemistryCrystal Field Theory
The model treating metal–ligand bonding as purely electrostatic and analysing how ligand fields split the metal d orbitals.