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Spatial distribution of 6s2 lone electron pair in Pb4Na(PO4)3 and stereochemical activity of the 6s2 electron cloud in lead-bearing apatites
In lacunary apatite structure-type Pb4Na(PO4)3, residual density attributable to the deformed 6s2 electron cloud is found in the vicinity of A2-site Pb2+ on regular A2 triangle normal to c. Systematic...