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- Title
Li<sub>2</sub>BaSc(BO<sub>3</sub>)<sub>2</sub>F and LiBa<sub>2</sub>Pb(BO<sub>3</sub>)<sub>2</sub>F with Layered Structures featuring Special Li−O/F Configurations.
- Authors
Zhang, Min; Wu, Hongping; Yang, Zhihua; Pan, Shilie; Chen, Yanna; Hu, Cong
- Abstract
Two new borate fluorides, Li2BaSc(BO3)2F and LiBa2Pb(BO3)2F, with layered structures featuring special Li−O/F configurations have been successfully prepared by the high‐temperature solution method. Li2BaSc(BO3)2F contains the first reported 2∞[Li2(BO3)2F] double layers that are evolved from 2∞[Be2BO3F2] single layers in KBe2BO3F2 through substituting BeO4 with the LiO3F tetrahedra. The adjacent double layers are tightly connected by strong Sc−O bonds, generating the strongest interlayer bond and smallest interlayer distance among KBe2BO3F2 derivatives with double‐layered structures. LiBa2Pb(BO3)2F features 2∞[Li(BO3)2F] single layers built up of special LiO4F2 octahedra and the BO3 triangles. To our best knowledge, the LiO4F2 octahedron is observed for the first time in borates. Besides, the LiO4F2 octahedra construct unique 1∞[LiO4F] straight chains through sharing apical F atoms, which is different from the configurations of the similar six‐coordinated LiO6 octahedra in other borates. Layer cake: Two new borate fluorides, Li2BaSc(BO3)2F and LiBa2Pb(BO3)2F, were prepared, which featuring different layered structures and exhibiting special Li‐O/F configurations. For Li2BaSc(BO3)2F, the KBe2BO3F2‐type 2∞[Li2(BO3)2F] double‐layer is firstly reported. For LiBa2Pb(BO3)2F, the LiO4F2 octahedron is firstly observed in borates, which construct a unique 1D 1∞[LiO4F] straight chain via vertex‐sharing of F atoms.
- Subjects
FLUORIDES; BORATES; TETRAHEDRA; OCTAHEDRA; OPTICAL materials
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 58, p15477
- ISSN
0947-6539
- Publication type
Academic Journal
- DOI
10.1002/chem.201804126