Crystal chemical information to be obtained from the bond-number equality concept

Based on the bond‐number equality concept an equation is derived for anion complexes of normal valence compounds with triangularly and/or tetrahedrally coordinated central atoms and anions having one, two, three and four bonds to central atoms: %Δ = 4 − (n/m′) × [2 − %A[1] + %A[3] + 2 × %A[4]]. %Δ i...

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