Tetrahedrally Coordinated sp 3 -Hybridized Carbon in Sr 2 CO 4 Orthocarbonate at Ambient Conditions

We have synthesized the orthocarbonate Sr CO , in which carbon is tetrahedrally coordinated by four oxygen atoms, at moderately high pressures [20(1) GPa] and high temperatures (≈3500 K) in a diamond anvil cell by reacting a SrCO single crystal with SrO powder. We show by synchrotron powder X-ray di...

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Bibliographic Details
Published inInorganic chemistry Vol. 60; no. 8; pp. 5419 - 5422
Main Authors Spahr, Dominik, Binck, Jannes, Bayarjargal, Lkhamsuren, Luchitskaia, Rita, Morgenroth, Wolfgang, Comboni, Davide, Milman, Victor, Winkler, Björn
Format Journal Article
LanguageEnglish
Published United States 19.04.2021
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Summary:We have synthesized the orthocarbonate Sr CO , in which carbon is tetrahedrally coordinated by four oxygen atoms, at moderately high pressures [20(1) GPa] and high temperatures (≈3500 K) in a diamond anvil cell by reacting a SrCO single crystal with SrO powder. We show by synchrotron powder X-ray diffraction, Raman spectroscopy, and density functional thoery calculations that this phase, and hence sp -hybridized carbon in a CO group, can be recovered at ambient conditions. The C-O bond distances are all of similar lengths [≈1.41(1) Å], and the O-C-O angles deviate from the ideal tetrahedral angle by a few degrees only.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.1c00159