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@article{1f92093a44e747a79987b62b0dd83cee,
title = "Zn(NH3)2Cl2, a Mineral-like Anthropogenic Phase with Ammine Complexes from the Burned Dumps of the Chelyabinsk Coal Basin, South Urals, Russia: Crystal Structure, Spectroscopy and Thermal Evolution",
abstract = "The mineral-like anthropogenic phase Zn(NH3)2Cl2, with ammine (NH30) complexes from the burned dumps of the Chelyabinsk coal basin (South Urals, Russia), has been investigated using single-crystal and high-temperature powder X-ray diffraction, and Raman and infrared (IR) spectroscopy. The anthropogenic Zn(NH3)2Cl2 is orthorhombic, Imma, a = 7.7399(6), b = 8.0551(5), c = 8.4767(8) {\AA}, V = 528.49(7) {\AA}3, R1 = 0.0388 at −73 °C. Its crystal structure is based upon isolated ZnN2Cl2 tetrahedra connected by hydrogen bonds (between NH3 groups and Cl atoms) into a three-dimensional network. Upon heating, the Zn(NH3)2Cl2 phase is stable up to about 150 °C, which is in good agreement with the data on the temperature of its formation. The crystal structure of Zn(NH3)Cl2 expands anisotropically with the strongest thermal expansion observed along the a axis. The thermal expansion of the structure is controlled by the changes in the hydrogen bonding system. The Raman and IR spectroscopic characteristics of this phase are close to those of the mineral ammineite, CuCl2(NH3)2. The studied anthropogenic phase, formed in the unique conditions of burned coal dumps, is identical to the synthetic Zn(NH3)2Cl2.",
keywords = "Chelyabinsk coal basin, Raman spectroscopy, Zn(NH3)2Cl2, anthropogenic mineral-like phase, burned coal dumps, crystal structure, infrared spectroscopy, thermal behavior",
author = "Zolotarev, {Andrey A.} and Avdontceva, {Margarita S.} and Sheveleva, {Rezeda M.} and Pekov, {Igor V.} and Vlasenko, {Natalia S.} and Bocharov, {Vladimir N.} and Krzhizhanovskaya, {Maria G.} and Zolotarev, {Anatoly A.} and Rassomakhin, {Mikhail A.} and Krivovichev, {Sergey V.}",
year = "2023",
month = aug,
day = "21",
doi = "10.3390/min13081109",
language = "English",
volume = "13",
pages = "1109",
journal = "Minerals",
issn = "2075-163X",
publisher = "MDPI AG",
number = "8",

}

RIS

TY - JOUR

T1 - Zn(NH3)2Cl2, a Mineral-like Anthropogenic Phase with Ammine Complexes from the Burned Dumps of the Chelyabinsk Coal Basin, South Urals, Russia: Crystal Structure, Spectroscopy and Thermal Evolution

AU - Zolotarev, Andrey A.

AU - Avdontceva, Margarita S.

AU - Sheveleva, Rezeda M.

AU - Pekov, Igor V.

AU - Vlasenko, Natalia S.

AU - Bocharov, Vladimir N.

AU - Krzhizhanovskaya, Maria G.

AU - Zolotarev, Anatoly A.

AU - Rassomakhin, Mikhail A.

AU - Krivovichev, Sergey V.

PY - 2023/8/21

Y1 - 2023/8/21

N2 - The mineral-like anthropogenic phase Zn(NH3)2Cl2, with ammine (NH30) complexes from the burned dumps of the Chelyabinsk coal basin (South Urals, Russia), has been investigated using single-crystal and high-temperature powder X-ray diffraction, and Raman and infrared (IR) spectroscopy. The anthropogenic Zn(NH3)2Cl2 is orthorhombic, Imma, a = 7.7399(6), b = 8.0551(5), c = 8.4767(8) Å, V = 528.49(7) Å3, R1 = 0.0388 at −73 °C. Its crystal structure is based upon isolated ZnN2Cl2 tetrahedra connected by hydrogen bonds (between NH3 groups and Cl atoms) into a three-dimensional network. Upon heating, the Zn(NH3)2Cl2 phase is stable up to about 150 °C, which is in good agreement with the data on the temperature of its formation. The crystal structure of Zn(NH3)Cl2 expands anisotropically with the strongest thermal expansion observed along the a axis. The thermal expansion of the structure is controlled by the changes in the hydrogen bonding system. The Raman and IR spectroscopic characteristics of this phase are close to those of the mineral ammineite, CuCl2(NH3)2. The studied anthropogenic phase, formed in the unique conditions of burned coal dumps, is identical to the synthetic Zn(NH3)2Cl2.

AB - The mineral-like anthropogenic phase Zn(NH3)2Cl2, with ammine (NH30) complexes from the burned dumps of the Chelyabinsk coal basin (South Urals, Russia), has been investigated using single-crystal and high-temperature powder X-ray diffraction, and Raman and infrared (IR) spectroscopy. The anthropogenic Zn(NH3)2Cl2 is orthorhombic, Imma, a = 7.7399(6), b = 8.0551(5), c = 8.4767(8) Å, V = 528.49(7) Å3, R1 = 0.0388 at −73 °C. Its crystal structure is based upon isolated ZnN2Cl2 tetrahedra connected by hydrogen bonds (between NH3 groups and Cl atoms) into a three-dimensional network. Upon heating, the Zn(NH3)2Cl2 phase is stable up to about 150 °C, which is in good agreement with the data on the temperature of its formation. The crystal structure of Zn(NH3)Cl2 expands anisotropically with the strongest thermal expansion observed along the a axis. The thermal expansion of the structure is controlled by the changes in the hydrogen bonding system. The Raman and IR spectroscopic characteristics of this phase are close to those of the mineral ammineite, CuCl2(NH3)2. The studied anthropogenic phase, formed in the unique conditions of burned coal dumps, is identical to the synthetic Zn(NH3)2Cl2.

KW - Chelyabinsk coal basin

KW - Raman spectroscopy

KW - Zn(NH3)2Cl2

KW - anthropogenic mineral-like phase

KW - burned coal dumps

KW - crystal structure

KW - infrared spectroscopy

KW - thermal behavior

UR - https://www.mendeley.com/catalogue/1287ad99-8095-35e5-8f9c-1979791d884e/

U2 - 10.3390/min13081109

DO - 10.3390/min13081109

M3 - Article

VL - 13

SP - 1109

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 8

ER -

ID: 110670878