Lanthanide Inorganic Solids Based on Main Group Borates and Oxyanions of Lone Pair Cations. Issue 1 (15th December 2017)

• Record Type: Journal Article
• Authors: Kong, Fang; Ma, Yunxiang; Mao, Jianggao
• Is Part Of: Chinese journal of chemistry. Volume 36:Issue 1(2018)
• Page Start: 63
• Page End: 72
• Publication Date: 2017-12-15
• Subjects: lanthanide -- inorganic solid -- borate -- iodate -- selenite -- tellurite; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201700597
• Languages: English
• ISSNs: 1001-604X

Abstract

ABSTRACT: Lanthanide borates containing post transition metal main group elements, including Ga(III), Ge(IV), Sb(V) and Te(VI), as well as lanthanide salts of the oxyanions of lone pair cations, such as I(V), Se(IV) and Te(IV), were reviewed. The post transition metal main group elements in lanthanide borates adopt octahedral or tetrahedral geometry only. In the structure of lanthanide galloborates, only octahedral GaO6 was found while both octahedral GeO6 and tetrahedral GeO4 appeared in borogermanates. The fifth period elements Sb(V) and Te(VI) prefer octahedral coordination geometry in lanthanide borates system. The second groups introduced to lanthanide oxyanions of lone pairs are mainly focused on d 0 TM units, such as WO4 tetrahedron, VO5 square pyramid or MoO6 octahedron, and rigid tetrahedral groups like sulfate SO4, silica SiO4 or selenate SeO4 units. Divalent cations like Pb(II) and magnetic ions of Cu(II) or Mn(II) were also included. The structure chemistry of lanthanide ions in these systems is rich. Coordination numbers from six to ten are discovered, yielding a wide range of coordination geometries including the pentagonal bipyramid, square antiprism, metabidiminished icosahedron, tricapped trigonal prism, capped triangular cupola, etc. The connectivity modes between the Ln polyhedra are miscellaneous, from 3D network, to 2D layer, 1D chain, tetramer, trimer, dimer and finally monomer. A number of compounds display NCS structures and strong SHG response, and many lanthanide compounds exhibit good luminescent properties in visible and IR region. Abstract : Lanthanide borates containing Ga(III), Ge(IV), Sb(V) or Te(VI), and lanthanide oxyanions of lone pair cations, such as I(V), Se(IV) and Te(IV), were reviewed. The connectivity style of the Ln polyhedra is miscellaneous. Compounds with multifunction, such as magnetic, photoluminescent and SHG properties, were found in these systems.