TY - JOUR
T1 - Identification of Barium Hydroxo-Hydroperoxostannate Precursor for Low-Temperature Formation of Perovskite Barium Stannate
AU - Medvedev, Alexander G.
AU - Mikhaylov, Alexey A.
AU - Shames, Alexander I.
AU - Ilyukhin, Andrey B.
AU - Churakov, Andrei V.
AU - Grishanov, Dmitry A.
AU - Mel'nik, Elena A.
AU - Tripol'skaya, Tatiana A.
AU - Lev, Ovadia
AU - Prikhodchenko, Petr V.
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/12/21
Y1 - 2020/12/21
N2 - A breakthrough "superoxide colloidal solution route"for low-temperature synthesis of barium and strontium stannate perovskites and their doped analogues was recently introduced. The synthesis starts from hydrogen peroxide-rich stannate solutions and yields a so-called "crystalline superoxide molecular cluster"that is converted by low temperature (<300 °C) to the respective perovskites. In this paper, the so-called "crystalline superoxide molecular cluster"is identified as a superoxide-free, barium trihydroxo(hydroperoxo)peroxostannate, BaSn(OH)3(OOH)(OO) phase (BHHPS). EPR and Raman spectroscopy studies reveal the absence of superoxide in this crystalline phase. FTIR of the deuterated sample, 119Sn NMR, and elemental analysis uncovered the empirical formula, H4O7SnBa with two peroxides per each tin element. Rietveld refinement of the XRD confirms the BHHPS cubic phase with replacement of the perovskite oxygen atoms by the OH- A nd OOH-ligands and peroxobridging groups.
AB - A breakthrough "superoxide colloidal solution route"for low-temperature synthesis of barium and strontium stannate perovskites and their doped analogues was recently introduced. The synthesis starts from hydrogen peroxide-rich stannate solutions and yields a so-called "crystalline superoxide molecular cluster"that is converted by low temperature (<300 °C) to the respective perovskites. In this paper, the so-called "crystalline superoxide molecular cluster"is identified as a superoxide-free, barium trihydroxo(hydroperoxo)peroxostannate, BaSn(OH)3(OOH)(OO) phase (BHHPS). EPR and Raman spectroscopy studies reveal the absence of superoxide in this crystalline phase. FTIR of the deuterated sample, 119Sn NMR, and elemental analysis uncovered the empirical formula, H4O7SnBa with two peroxides per each tin element. Rietveld refinement of the XRD confirms the BHHPS cubic phase with replacement of the perovskite oxygen atoms by the OH- A nd OOH-ligands and peroxobridging groups.
UR - http://www.scopus.com/inward/record.url?scp=85097908903&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.0c02993
DO - 10.1021/acs.inorgchem.0c02993
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 33285066
AN - SCOPUS:85097908903
SN - 0020-1669
VL - 59
SP - 18358
EP - 18365
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 24
ER -