Intro to Crystal Field Theory definitions Flashcards
Intro to Crystal Field Theory definitions
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Crystal Field Theory Explains colors and magnetic properties of transition metal coordination compounds by ligand-induced energy changes in metal d orbitals. Ligands Molecules or ions that create an electric field around metal cations, affecting the energy of metal d orbitals. Metal Cations Positively charged metal ions that interact with ligands, influencing the energy of their d orbitals. d Orbitals Five orbitals in transition metals whose energy levels are affected by ligand interactions in coordination compounds. Octahedral Complexes Coordination compounds where ligands are positioned on the axes, affecting dx2-y2 and dz2 orbitals most. Tetrahedral Complexes Coordination compounds where ligands interact most with dxy, dyz, and dxz orbitals, increasing their energy. Electrostatic Interaction Repulsion between like charges of metal cation and ligand electrons, raising d orbital energy. Ligand Field Theory An extension of crystal field theory incorporating molecular orbital theory to explain ligand interactions. Energy Levels The relative energy of d orbitals in metal cations, altered by ligand interactions in coordination complexes. Complex Geometry The spatial arrangement of ligands around a metal cation, crucial for determining d orbital interactions. Magnetic Properties Characteristics of coordination compounds influenced by the arrangement and energy of d orbitals. Color A property of coordination compounds resulting from specific d orbital energy transitions influenced by ligands. dx2-y2 Orbital A d orbital in octahedral complexes with significant ligand interaction along the x and y axes. dz2 Orbital A d orbital in octahedral complexes with significant ligand interaction along the z axis. dxy Orbital A d orbital in tetrahedral complexes with significant ligand interaction between the axes.
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