var nc = 19, fc = new Array(nc); fc[0] = {t:"Chelate Effect",d:"The greater affinity of metal ions for polydentate ligands than for monodentate ligands."}; fc[1] = {t:"Chelation",d:"The interaction of a metal with a polydentate ligand (chelating agent); pairs of electrons on one molecule of the ligand occupy two or more coordination sites on the central metal."}; fc[2] = {t:"Complex Ion",d:"An ionic species consisting of a metal ion bonded to one or more Lewis bases."}; fc[3] = {t:"Coordinate Bond",d:"Formed when one anion or molecule donates a pair of electrons to another ion or molecule to form a covalent bond."}; fc[4] = {t:"Coordination Compound",d:"Made up of at least one complex ion."}; fc[5] = {t:"Coordination Number",d:"Identifies the number of electron pairs surrounding a metal ion in a complex."}; fc[6] = {t:"Counter Ions",d:"Provide electrical balance of charges of complex ions in coordination compounds."}; fc[7] = {t:"Crystal Field Splitting",d:"The separation of a set of d orbitals into subsets with different energies as result of interactions between electrons in those orbitals and lone pairs of electrons in ligands."}; fc[8] = {t:"Crystal Field Splitting Energy (Δ)",d:"The difference in energy between subsets of d orbitals split by interactions in a crystal field."}; fc[9] = {t:"Formation Constant (Kf)",d:"Equilibrium constant describing the formation of a metal complex from a free metal ion and its ligands."}; fc[10] = {t:"Inner Coordination Sphere",d:"The ligands that are bound directly to a metal via coordinate bonds."}; fc[11] = {t:"Lewis Acid",d:"A substance that accepts a lone pair of electrons in a chemical reaction."}; fc[12] = {t:"Lewis Base",d:"A substance that donates a lone pair of electrons in a chemical reaction."}; fc[13] = {t:"Ligand",d:"A Lewis base bonded to the central metal ion of a complex ion."}; fc[14] = {t:"Macrocyclic Ligand",d:"A ring containing multiple electron-pair donors that bind to a metal ion."}; fc[15] = {t:"Monodentate Ligand",d:"A species that forms only a single coordinate bond to a metal ion in a complex."}; fc[16] = {t:"Polydentate Ligand",d:"A species that can form more than one coordinate bond per molecule."}; fc[17] = {t:"Porphyrin",d:"A type of tetradentate macrocyclic ligand."}; fc[18] = {t:"Spectrochemical Series",d:"A list of ligands rank-ordered by their ability to split the energies of the d orbitals of transition metal ions."};