Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution

Alexander G. Medvedev; Alexey A. Mikhaylov; Andrei V. Churakov; Mikhail V. Vener; Tatiana A. Tripol'skaya; Shmuel Cohen; Ovadia Lev; Petr V. Prikhodchenko

doi:10.1021/acs.inorgchem.5b01293

Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution

Alexander G. Medvedev
, Alexey A. Mikhaylov
, Andrei V. Churakov
, Mikhail V. Vener
, Tatiana A. Tripol'skaya
, Shmuel Cohen
, Ovadia Lev^*
, Petr V. Prikhodchenko

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Potassium (K₆[Ge₆(μ-OO)₆(μ-O)₆(OH)₆]·14H₂O, 1), cesium ammonium (Cs_4.2(NH₄)_1.8[Ge₆(μ-OO)₆(μ-O)₆(OH)₆]·8H₂O, 2), and potassium ammonium (K_2.4(NH₄)_3.6[Ge₆(μ-OO)₆(μ-O)₆(OH)₆]·6H₂O, 3) peroxogermanates were isolated from 3% hydrogen peroxide aqueous solutions of the corresponding hydroxogermanates and characterized by single crystal and powder X-ray diffraction studies and by Raman spectroscopy and thermal analysis. The crystal structure of all three compounds consists of cations of potassium and/or ammonium and cesium, water molecules, and centrosymmetric hexanuclear peroxogermanate anion [Ge₆(μ-OO)₆(μ-O)₆(OH)₆]^6- with six μ-oxo- and six μ-peroxo groups. Peroxogermanates demonstrate relatively high thermal stability: the peroxide remains in the structure even after water release after heating to 100-120 C. DFT calculations of the peroxogermanate [Ge₆(μ-OO)₆(μ-O)₆(OH)₆]^6- anion confirm its higher thermodynamic stability compared to the hydroperoxo- and oxogermanate analogues. (Chemical Equation Presented).

Original language	English
Pages (from-to)	8058-8065
Number of pages	8
Journal	Inorganic Chemistry
Volume	54
Issue number	16
DOIs	https://doi.org/10.1021/acs.inorgchem.5b01293
State	Published - 17 Aug 2015

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© 2015 American Chemical Society.

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10.1021/acs.inorgchem.5b01293

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@article{fa721a5a4187458ea7b41a6cf402f5fd,

title = "Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution",

abstract = "Potassium (K6[Ge6(μ-OO)6(μ-O)6(OH)6]·14H2O, 1), cesium ammonium (Cs4.2(NH4)1.8[Ge6(μ-OO)6(μ-O)6(OH)6]·8H2O, 2), and potassium ammonium (K2.4(NH4)3.6[Ge6(μ-OO)6(μ-O)6(OH)6]·6H2O, 3) peroxogermanates were isolated from 3\% hydrogen peroxide aqueous solutions of the corresponding hydroxogermanates and characterized by single crystal and powder X-ray diffraction studies and by Raman spectroscopy and thermal analysis. The crystal structure of all three compounds consists of cations of potassium and/or ammonium and cesium, water molecules, and centrosymmetric hexanuclear peroxogermanate anion [Ge6(μ-OO)6(μ-O)6(OH)6]6- with six μ-oxo- and six μ-peroxo groups. Peroxogermanates demonstrate relatively high thermal stability: the peroxide remains in the structure even after water release after heating to 100-120 C. DFT calculations of the peroxogermanate [Ge6(μ-OO)6(μ-O)6(OH)6]6- anion confirm its higher thermodynamic stability compared to the hydroperoxo- and oxogermanate analogues. (Chemical Equation Presented).",

author = "Medvedev, \{Alexander G.\} and Mikhaylov, \{Alexey A.\} and Churakov, \{Andrei V.\} and Vener, \{Mikhail V.\} and Tripol'skaya, \{Tatiana A.\} and Shmuel Cohen and Ovadia Lev and Prikhodchenko, \{Petr V.\}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = aug,

day = "17",

doi = "10.1021/acs.inorgchem.5b01293",

language = "אנגלית",

volume = "54",

pages = "8058--8065",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "16",

}

TY - JOUR

T1 - Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution

AU - Medvedev, Alexander G.

AU - Mikhaylov, Alexey A.

AU - Churakov, Andrei V.

AU - Vener, Mikhail V.

AU - Tripol'skaya, Tatiana A.

AU - Cohen, Shmuel

AU - Lev, Ovadia

AU - Prikhodchenko, Petr V.

PY - 2015/8/17

Y1 - 2015/8/17

N2 - Potassium (K6[Ge6(μ-OO)6(μ-O)6(OH)6]·14H2O, 1), cesium ammonium (Cs4.2(NH4)1.8[Ge6(μ-OO)6(μ-O)6(OH)6]·8H2O, 2), and potassium ammonium (K2.4(NH4)3.6[Ge6(μ-OO)6(μ-O)6(OH)6]·6H2O, 3) peroxogermanates were isolated from 3% hydrogen peroxide aqueous solutions of the corresponding hydroxogermanates and characterized by single crystal and powder X-ray diffraction studies and by Raman spectroscopy and thermal analysis. The crystal structure of all three compounds consists of cations of potassium and/or ammonium and cesium, water molecules, and centrosymmetric hexanuclear peroxogermanate anion [Ge6(μ-OO)6(μ-O)6(OH)6]6- with six μ-oxo- and six μ-peroxo groups. Peroxogermanates demonstrate relatively high thermal stability: the peroxide remains in the structure even after water release after heating to 100-120 C. DFT calculations of the peroxogermanate [Ge6(μ-OO)6(μ-O)6(OH)6]6- anion confirm its higher thermodynamic stability compared to the hydroperoxo- and oxogermanate analogues. (Chemical Equation Presented).

AB - Potassium (K6[Ge6(μ-OO)6(μ-O)6(OH)6]·14H2O, 1), cesium ammonium (Cs4.2(NH4)1.8[Ge6(μ-OO)6(μ-O)6(OH)6]·8H2O, 2), and potassium ammonium (K2.4(NH4)3.6[Ge6(μ-OO)6(μ-O)6(OH)6]·6H2O, 3) peroxogermanates were isolated from 3% hydrogen peroxide aqueous solutions of the corresponding hydroxogermanates and characterized by single crystal and powder X-ray diffraction studies and by Raman spectroscopy and thermal analysis. The crystal structure of all three compounds consists of cations of potassium and/or ammonium and cesium, water molecules, and centrosymmetric hexanuclear peroxogermanate anion [Ge6(μ-OO)6(μ-O)6(OH)6]6- with six μ-oxo- and six μ-peroxo groups. Peroxogermanates demonstrate relatively high thermal stability: the peroxide remains in the structure even after water release after heating to 100-120 C. DFT calculations of the peroxogermanate [Ge6(μ-OO)6(μ-O)6(OH)6]6- anion confirm its higher thermodynamic stability compared to the hydroperoxo- and oxogermanate analogues. (Chemical Equation Presented).

UR - https://www.scopus.com/pages/publications/84939421956

U2 - 10.1021/acs.inorgchem.5b01293

DO - 10.1021/acs.inorgchem.5b01293

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84939421956

SN - 0020-1669

VL - 54

SP - 8058

EP - 8065

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 16

ER -

Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution

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