Mixed Alkali Neodymium Orthoborates: K9Li3Nd3(BO3)7 and A2LiNd(BO3)2 (A = Rb, Cs)1. Issue 5 (8th March 2016)

• Record Type: Journal Article
• Authors: Chen, Pengyun; Xia, Mingjun; Li, Rukang
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 642:Issue 5(2016)
• Page Start: 424
• Page End: 430
• Publication Date: 2016-03-08
• Subjects: Single crystal -- Neodymium -- Orthoborate -- Alkali metals, Fluorescence spectroscopy; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201500804
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: Crystals of mixed alkali neodymium orthoborates, K9 Li3 Nd3 (BO3 )7 and A 2 LiNd(BO3 )2 ( A = Rb, Cs) were obtained by spontaneous crystallization. K9 Li3 Nd3 (BO3 )7 crystallizes in space group P 2/ c with cell parameters of a = 11.4524(7) Å, b = 10.1266(6) Å, c = 12.3116 (10) Å, β = 122.0090(10)°. In the structure, NdO8 polyhedra share corners and connect with planer BO3 groups to form infinite [Nd3 B3 O21 ] n chains. These chains are linked by additional BO3 groups to produce a double layer of [Nd6 B6 O38 ] n blocks in the ac plane with K and Li ions filled into the cavities. A 2 LiNd(BO3 )2 ( A = Rb, Cs) crystallizes in space group Pbcm, with cell parameters of a = 7.113(2) Å, b = 9.691(3) Å and c = 10.135(3) Å for Rb2 LiNd(BO3 )2, and a = 7.2113(3) Å, b = 9.9621(4) Å, and c = 10.3347(4) Å for Cs2 LiNd(BO3 )2 . In the structure, NdO8 polyhedra are corner‐sharing with each other and further interlinked by BO3 groups to comprise the infinite [Nd4 B4 O24 ] sheets in the bc plane, with Rb/Cs and Li ions occupying the interlayered space. The compounds show effective near‐IR emission and their associated lifetimes are obtained by fluorescence spectra. Abstract :