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Further Representatives of the Type RE 3 [Si 5 N 9 O] ( RE = Dy–Er, Yb)
Author(s) -
Wilhelm Dominik,
Seibald Markus,
Baumann Dominik,
Wurst Klaus,
Huppertz Hubert
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201701185
Subject(s) - chemistry , orthorhombic crystal system , crystallography , crystal structure , raman spectroscopy , lattice energy , valence (chemistry) , x ray crystallography , bond length , neutron diffraction , diffraction , physics , organic chemistry , optics
The isotypic series of the oxonitridosilicates RE 3 [Si 5 N 9 O] ( RE = Dy–Er, Yb) was synthesized via solid‐state reactions at high temperatures using a radio‐frequency furnace. The crystal structures were solved and refined from single‐crystal X‐ray diffraction and powder X‐ray diffraction data. Further characterizations were performed using vibrational spectroscopy (IR and Raman), REM‐EDX measurements, lattice energy calculations (MAPLE), charge distribution (CHARDI), and bond‐valence sum calculations (BVS). The compounds RE 3 [Si 5 N 9 O] ( RE = Dy–Er, Yb) crystallize in the orthorhombic space group Pbcm (no. 57) ( Z = 4) with the following lattice parameters: Dy 3 [Si 5 N 9 O]: a = 4.9865(3), b = 16.1633(9), and c = 10.6651(6) Å; Ho 3 [Si 5 N 9 O]: a = 4.9758(3), b = 16.1332(7), and c = 10.6312(5) Å; Er 3 [Si 5 N 9 O]: a = 4.9682(2), b = 16.1029(5), and c = 10.5995(3) Å; Yb 3 [Si 5 N 9 O]: a = 4.9473(2), b = 16.0622(5), and c = 10.5431(4) Å. The four isotypic compounds consist of a network of corner sharing SiN 4 and SiN 3 O tetrahedra. N [2] and N [3] interconnecting nitrogen atoms build five‐membered rings, hosting the rare earth cations.