SrTi(IO₃)₆·2H₂O and SrSn(IO₃)₆: distinct arrangements of lone pair electrons leading to large birefringences.

ABSTRACT: Three new iodates SrTi(IO₃)₆·2H₂O, (H₃O)₂Ti(IO₃)₆, and SrSn(IO₃)₆ have been synthesized via a facile hydrothermal method. The three compounds have zero-dimensional crystal structures composed of one [MO₆]^8- (M = Ti, Sn) octahedron connected with six [IO₃]^- trigonal pyramids. However, the particular coordination of Sr²⁺ cations results in distinct arrangements of lone pair electrons in an [IO₃]^- trigonal pyramid, which leads to large birefringences. More importantly, this work enriches the species crystal chemistry for [M(IO₃)₆]^2- (M = Ti, Sn) clusters-containing iodates.

SUBMITTER: Liu K 

PROVIDER: S-EPMC8695646 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature