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Complex in which the metal is in the center of a square plane, with ligand donor atoms at each of the four corners.

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Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Crystal Field Theory

Theory of bonding in transition metal complexes in which ligands and metal ions are treated as point charges, a purely ionic model, ligand point charges represent the crystal (electrical) field perturbing the metal?s d orbitals containing nonbonding electrons.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Outer Orbital Complex

Valence bond designation for a complex in which the metal ion utilizes d orbitals in the outermost (occupied) shell in hybridization.

Melting Point

The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

Saponification

Hydrolysis of esters in the presence of strong soluable bases.