Ammonothermal Synthesis and Crystal Growth of the Chain‐type Oxonitridosilicate Ca 1+ x Y 1– x SiN 3– x O x ( x > 0)

Autor:	Wolfgang Schnick, Mathias Mallmann, Christian Maak
Rok vydání:	2020
Předmět:	Maple Diffraction Lattice energy 010405 organic chemistry Chemistry Intermetallic Crystal growth Crystal structure engineering.material 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystallography engineering Orthorhombic crystal system Isostructural
Zdroj:	Zeitschrift für anorganische und allgemeine Chemie. 646:1539-1544
ISSN:	1521-3749 0044-2313
DOI:	10.1002/zaac.202000018
Popis:	The oxonitridosilicate Ca1+xY1–xSiN3–xOx (x > 0) was synthesized in custom‐built high‐temperature autoclaves starting from CaH2, intermetallic YSi and NaN3 using supercritical ammonia as solvent at a maximum pressure of 140 MPa and temperature of 1070 K. In situ formed NaNH2 acts as ammonobasic mineralizer and increases the solubility of the other starting materials. Air and moisture sensitive rod‐shaped single crystals of the title compound with length of up to 200 μm were obtained. The crystal structure was solved and refined by single‐crystal X‐ray diffraction. The results are supported by powder X‐ray diffraction, energy dispersive X‐ray spectroscopy and lattice energy (MAPLE) calculations. Ca1+xY1–xSiN3–xOx (x > 0) is isostructural to Ca2PN3 and Eu2SiN3 and crystallizes in the orthorhombic space group Cmce (no. 64) with a = 5.331(2), b = 10.341(4), c = 11.248(4) A and Z = 8 (R1 = 0.0257, wR2 = 0.0447) and contains infinite zweier single chains running along [100] which are built up from corner sharing Si(N,O)4 tetrahedra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3d07d3c6eb2907d66e00ec915747d24d https://doi.org/10.1002/zaac.202000018 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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