Premium
Li 2 Sr 4 Al 2 Ta 2 N 8 O, a Nitridoalumotantalate with BCT‐Zeolite Type Structure
Author(s) -
Pust Philipp,
Schnick Wolfgang
Publication year - 2012
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100380
Subject(s) - tantalum , crystal structure , lattice energy , crystallography , zeolite , materials science , lithium (medication) , maple , structure type , chemistry , metallurgy , medicine , botany , biology , endocrinology , catalysis , biochemistry
Li 2 Sr 4 Al 2 Ta 2 N 8 O was synthesized from Li 3 AlN 2 , Sr(NH 2 ) 2 , LiN 3 , and lithium metal as fluxing agent in weld shut tantalum crucibles. Single crystals were obtained as byproduct from reaction with the ampoule material. The crystal structure ( P 2 1 / n (no. 14), a = 9.4081(19), b = 10.012(2), c = 5.9832(12) Å, β = 93.44(3)°, Z = 2) was solved on the basis of single‐crystal X‐ray diffraction data. Li 2 Sr 4 Al 2 Ta 2 N 8 O is built up of vertex sharing AlN 4 and TaN 4 tetrahedra, forming a BCT‐zeolite type structure with Sr 2+ ions and molecular Li 2 O units incorporated into the voids. Lattice energy calculations (MAPLE) confirmed the electrostatic bonding interactions and the chemical composition.