4.6 Article

Lone-Pair Enhanced Birefringence in an Alkaline-Earth Metal Tin(II) Phosphate BaSn2(PO4)2

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 22, Pages 5648-5651

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201806108

Keywords

birefringence; crystal; first-principles calculations; lone pair electrons; tin(II) phosphates

Funding

  1. National Scientific Foundations of China [11474292, 51702330, 51802321, 91622118, 91622124]

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The first alkaline-earth metal tin(II) phosphate, BaSn2(PO4)(2), has been discovered, which consists of layered structures constructed from strictly alternating [SnO3](4-) and [PO4](3-) moieties. This compound is expected to have a large birefringence with Delta n approximate to 0.071 at 1064 nm, owing to the presence of stereochemically active lone pair metal cations.

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