ChemInform Abstract: Nonlinear Optical Response Mechanism of Noncentrosymmetric Lead Borate Pb6[B4O7(OH)2]3 with Three Crystallographically Independent [B4O7(OH)2]4- Chains.
Pb6[B4O7(OH)2]3 is prepared by the hydrothermal reaction of a 1:2.4:0.8 molar mixture of PbO, H3BO3, and NaCl in Teflon pouches (autoclave, H2O, 210 °C, 4 d; ≈85% yield based on Pb).