New silicate-germanates (K2.9Cs0.1)(Sc0.7In0.3)[(Si2.95Ge0.05)O9]·H2O and (K2.16Cs0.84)Bi[(Si0.5Ge0.5)3O9]·H2O have been synthesized in multi-component systems under mild hydrothermal conditions. The new compounds are classified as new representatives of close related K3ScSi3O9·H2O parent structure, sp. gr. Pmn21. Their structural and isomorphic peculiarities are compared with it as well as with earlier investigated K1.46Pb1.54Сa[(Ge0.23Si0.77)3O9](ОН)0.54·0.46Н2О. Together with other known compounds, silicate-germanates form the extensive family A3M[T3O9]·H2O, A = K, Cs, Ca, Pb; M = Ho, Sc, Lu, Tb, Er, Y, Bi, Pb, In; T = Si, Ge, with a mixed microporous framework combined of M-octahedra and T-tetrahedra. Large alkali metal or/and Ca, Pb cations fill broad framework channels with cross-section up to 7.3 Å. Because of wide isomorphic substitution in the channels, and in tetrahedra and octahedra, ion exchange properties in the family are expected. Due to polar symmetry, all the crystals possess second-order nonlinearity which was confirmed with positive SHG tests for four compositions. Powder SHG experiments demonstrated moderate second harmonic intensities of order of α-quartz standard signals.

中文翻译：

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具有宽同晶取代基的微孔骨架极性硅酸盐-锗酸盐：(K2.9Cs0.1)(Sc0.7In0.3)[(Si2.95Ge0.05)O9]·H2O和(K2.16Cs0.84)Bi[(Si1 .5Ge1.5)O9]·H2O

新的硅酸盐-锗酸盐（K2.9CS0.1)(科学0.7在0.3)[(硅2.95葛0.05)O9]·H2个O和（K2.16CS0.84)Bi[(Si0.5葛0.5)3个欧9]·H2个O 已在温和的水热条件下在多组分系统中合成。新化合物被归类为密切相关的 K 的新代表3个硅硅3个欧9·H2个O父结构，sp。克。Pn2个1个. 它们的结构和同构特性与它以及早期研究的 K 进行了比较1.46铅1.54Сa[(Ge0.23硅0.77)3个欧9](ОН)0.54·0.46Н2个О. 与其他已知化合物一起，硅酸盐-锗酸盐形成广泛的家族 A3个公吨3个欧9]·H2个O、A=K、Cs、Ca、Pb；M = Ho、Sc、Lu、Tb、Er、Y、Bi、Pb、In；T = Si、Ge，具有 M-八面体和 T-四面体组合的混合微孔骨架。大的碱金属或/和 Ca、Pb 阳离子填充宽阔的框架通道，横截面高达 7.3 Å。由于通道、四面体和八面体中的广泛同构取代，预计该家族具有离子交换特性。由于极性对称性，所有晶体都具有二阶非线性，这已通过四种成分的正 SHG 测试得到证实。粉末 SHG 实验证明了 α-石英标准信号的中等二次谐波强度。