Ji Mengya, Hu Chunli, Fang Zhi, Chen Yan, Mao Jianggao
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China.
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Inorg Chem. 2021 Oct 18;60(20):15744-15750. doi: 10.1021/acs.inorgchem.1c02388. Epub 2021 Sep 27.
Two alkali tin(II) phosphates, namely, Rb[SnF(HPO)] and Rb(SnO)(PO), were synthesized through mild hydrothermal methods. They belong to the orthorhombic and space groups, respectively. Rb[SnF(HPO)] features a layered structure based on 1D [SnF(HPO)] chains interconnected by hydrogen bonds, with Rb cations located at the interlayer space. For Rb(SnO)(PO), each pair of [SnO] clusters is bridged by a pair of [P(1)O] tetrahedra to build a 1D [Sn-P-O] chain. These 1D [Sn-P-O] chains are further cross-linked though [P(2)O] tetrahedra to construct a 3D network with 7- and 10-membered-ring channels. The tin(II) ions in Rb[SnF(HPO)] and Rb(SnO)(PO) with stereochemically active lone pairs (SCALPs) significantly enhance the birefringences of metal phosphates: Δ = 0.147@1064 nm for Rb[SnF(HPO)] and 0.082@1064 nm for Rb(SnO)(PO).
