Na₈[B₁₂(BSe₃)₆]: A Novel Selenoborato‐closo‐dodecaborate

Abstract

Systematic studies on selenoborates containing a B12 cluster entity and alkali metal cations led to the new crystalline phase Na8[B12(BSe3)6] which consists of a icosahedral B12 cluster completely saturated with trigonal‐planar BSe3 units and sodium counter‐ions. The new chalcogenoborate was prepared in a solid state reaction from sodium selenide, amorphous boron and selenium in evacuated carbon coated silica tubes at a temperature of 850 °C. Na8[B12(BSe3)6] crystallizes in the monoclinic space group P21/c (no. 14) with a = 10.990(1) Å, b = 16.279(1) Å, c = 11.490(1), β = 117.82(1)° and Z = 2.

KEu2In3B12S13: a novel type of thioborate featuring B12S12 cluster and unique In6S6 12-membered ring

“…4,10 According to their chemical compositions, most chalcogenoborates are ternary or quaternary, as reported by the wonderful studies of Krebs. 4,[11][12][13][14][15][16] In around recent ten years, there are only five studies addressing chalcogenoborates containing B 12 It is well known that borates are wonderful functional materials as either electrode materials for rechargeable batteries or second-order nonlinear optical (NLO) materials in the ultraviolet (UV) region. [20][21][22][23][24][25] On the other hand, chalcogenides are the most competitive candidates for NLO materials in the middle-infrared (MIR) region.…”

“…The B-B and In-S bond distances changed within 1.803(15)-1.816(10) Å and 2.646(2)-2.649(1) Å, respectively, which were close to those in other structures containing B 12 S 12 clusters. [10][11][12][13][14][15][16][17][18][19] Six B(1) and six B(2) atoms are connected with each other or themselves to form a B 12 icosahedron (Fig. 1a), and all the faces are planar triangles.…”

3 Boron

“…Single crystal X-ray diffraction studies revealed the molecular structure to consist of an icosahedral B 12 cluster completely saturated with bridging trigonal planar {m-BSe 3 } units and sodium counter-ions. 18 The perhalogenated derivatives Cs[B 12 X 12 ] (X = Cl, Br, I) have been synthesised and the molecular structures of their dihydrates determined. 19 The SMe .…”

KNa0.78Eu0.27In3.80B12S12: a novel hexanary thioborate featuring a B12S12 cluster and diverse InSx (x = 4, 5, 6) units

“…Different from this style, B 12 icosahedron can also connect with twelve Q (Q = S, Se) atoms to form a unique [B 12 Q 12 ] 14− cluster. [25][26][27][28][29][30][31][32] To date, around thirty chalcogenoborates containing B 12 Q 12 cluster have been discovered. In their structures, there are two types of coordination environments around each B 12 icosahedron.…”