New Series of Polar and Nonpolar Platinum Iodates A(2)Pt(IO3)(6) (A = H3O, Na, K, Rb, Cs)
New Series of Polar and Nonpolar Platinum Iodates A(2)Pt(IO3)(6) (A = H3O, Na, K, Rb, Cs)
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新系列极性和非极性铂碘酸盐 A(2)Pt(IO3)(6)（A = H3O、Na、K、Rb、Cs）
DOI：
10.1021/acs.inorgchem.5b02859
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发表时间：
2016
影响因子：
4.6
通讯作者：
Mao Jiang-Gao
中科院分区：
文献类型：
--
作者：
Yang Bing-Ping;Hu Chun-Li;Xu Xiang;Mao Jiang-Gao
合成了一系列新的碘化铂配合物，即α-（H_3O）_2Pt（IO_3）_6，β-（H_3O）_2Pt（IO_3）_6和A_2Pt（IO_3）_6（A = Na，K，Rb，Cs）。有趣的是，在这6个化学计量完全相同的化合物中，α-（H3 O）2 Pt（IO 3）6是极性的，而其他化合物是非极性的和中心对称的。它们都由零维的[Pt（IO 3）6]2-分子单元组成，中间被H3 O+或A+阳离子隔开。在α-（H_3O）_2Pt（IO_3）_6中，IO_3 ~-基团的孤电子对几乎都指向一个方向，而在其它化合物中，IO_3 ~-基团的孤电子对都是反方向的。该材料α-（H3 O）2 Pt（IO 3）6具有很强的二次谐波产生（SHG）效应，约为1.2 × KTiOPO 4（KTP），并且是相位匹配的。热重分析，元素分析，红外光谱，紫外-可见光谱，非线性光学性质，和理论计算也报道。
A new series of platinum iodates, namely, α-(H3O)2Pt(IO3)6, β-(H3O)2Pt(IO3)6, and A2Pt(IO3)6(A = Na, K, Rb, Cs), have been synthesized. Interestingly, among these six stoichiometrically identical compounds, α-(H3O)2Pt(IO3)6is polar, whereas other compounds are nonpolar and centrosymmetric. They all consist of zero-dimensional [Pt(IO3)6]2–molecular units separated by H3O+or A+cations. All of the lone electron pairs of the IO3–groups are aligned and almost point to one direction for α-(H3O)2Pt(IO3)6, whereas IO3–groups are locatedtransto each other in other compounds. The material, α-(H3O)2Pt(IO3)6, exhibits very strong second harmonic generation (SHG) effects, approximately 1.2 × KTiOPO4(KTP), and is phase-matchable. Thermogravimetric analysis, elemental analysis, infrared spectra, UV–vis spectra, nonlinear optical properties, and theoretical calculations are also reported.