Fr Francium

The hydrothermal reactions of PbCl2 or PbBr2 with diethyl [(phenylsulfonyl)methyl]phosphonate afforded two lead(II) phosphonates with the formula [Pb3(Ph–SO2–CH2–PO3)2X2(H2O)] [X = Cl (1) and Br (2)]. The two compounds are isostructural and exhibit a lamellar structure in which the phenylsulfonyl chromophores orient unilaterally on the inorganic layer of [Pb3(PO3)2X2(H2O)]. The acentric stacking of such layers results in their crystallization in the noncentrosymmetric Cc space group, and both compounds show second harmonic generation responses comparable to that of KDP (KH2PO4).Two lead(II) phosphonates, [Pb3(Ph–SO2–CH2–PO3)2X2(H2O)] [X = Cl (1) and Br (2)] were synthesized by hydrothermal reactions. The two isostructural compounds exhibit a lamellar structure with phenylsulfonyl chromophores orienting unilaterally on the inorganic layer of [Pb3(PO3)2X2(H2O)]. These compounds show second harmonic generation responses comparable to that of KDP (KH2PO4).