Trigonal-Bipyramidal Coordination in First Ammoniates\nof ZnF&lt;sub&gt;2&lt;/sub&gt;: ZnF&lt;sub&gt;2&lt;/sub&gt;(NH&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;3&lt;/sub&gt; and\nZnF&lt;sub&gt;2&lt;/sub&gt;(NH&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;

Theresia M. M. Richter (1982581); Sylvain LeTonquesse (1982578); Nicolas S. A. Alt (1982584); Eberhard Schlücker (1591846); Rainer Niewa (1669819)

JOURNAL ARTICLE

Trigonal-Bipyramidal Coordination in First Ammoniates\nof ZnF2: ZnF2(NH3)3 and\nZnF2(NH3)2

Theresia M. M. Richter (1982581)Sylvain LeTonquesse (1982578)Nicolas S. A. Alt (1982584)Eberhard Schlücker (1591846)Rainer Niewa (1669819)

Year: 2016 Journal: OPAL (Open@LaTrobe) (La Trobe University) Publisher: La Trobe University

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Abstract

Single crystals of\nZnF2(NH3)3 and ZnF2(NH3)2 were obtained under ammonothermal conditions\n(250 °C, 196 MPa and 500 °C, 136 MPa). Upon thermal decomposition\nof both ZnF2(NH3)3 and ZnF2(NH3)2, a microcrystalline powder of ZnF2(NH3) was obtained. ZnF2(NH3)3 and ZnF2(NH3)2 represent\nprobable intermediates in a conceivable ammonothermal synthesis of\nthe semiconductor Zn3N2 and manifest a rare\ntrigonal-bipyramidal coordination of F– and NH3 ligands around Zn2+ according to single-crystal\nX-ray diffraction. Thermal analysis of all three compounds showed\nnot only ZnF2(NH3) but also ZnF2(NH3)2 to be decomposition intermediates of ZnF2(NH3)3 prior to the formation of ZnF2. All three compounds demonstrate hydrogen bonds, as indicated\nby the intensities and half-widths of the bands in the vibrational\nspectra and by short N–H···F distances in the\ncrystal structures of ZnF2(NH3)3 and\nZnF2(NH3)2. With ZnF2(NH3)3, ZnF2(NH3)2, and ZnF2(NH3), we present the first ammoniates\nof ZnF2.

Keywords:

Microcrystalline Hydrogen Decomposition Thermal decomposition Thermal Semiconductor Coordination complex Thermal analysis

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Inorganic Fluorides and Related Compounds

Physical Sciences → Chemistry → Inorganic Chemistry

Luminescence Properties of Advanced Materials

Physical Sciences → Materials Science → Materials Chemistry

Inorganic Chemistry and Materials

Physical Sciences → Chemistry → Inorganic Chemistry

Trigonal-Bipyramidal Coordination in First Ammoniates\nof ZnF<sub>2</sub>: ZnF<sub>2</sub>(NH<sub>3</sub>)<sub>3</sub> and\nZnF<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub>

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