Abstract
Most of the earth's mantle is made up of high-pressure silicate minerals that contain octahedrally coordinated silicon (SiVI), but many thermodynamically important details of cation site ordering remain unknown. Silicon-29 nuclear magnetic resonance (NMR) spectroscopy is potentially very useful for determining short-range structure. A systematic study of silicon-29 chemical shifts for SiVI has revealed empirical correlations between shift and structure that are useful in understanding several new calcium silicates. The observed ordering state of a number of high-pressure magnesium silicates is consistent with the results of previous x-ray diffraction studies.
| Original language | English |
|---|---|
| Pages (from-to) | 294-298 |
| Number of pages | 5 |
| Journal | Science |
| Volume | 251 |
| Issue number | 4991 |
| Publication status | Published - Jan 18 1991 |
| Externally published | Yes |
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Cite this
Local structure and chemical shifts for six-coordinated silicon in high-pressure mantle phases. / Stebbins, Jonathan F.; Kanzaki, Masami.
In: Science, Vol. 251, No. 4991, 18.01.1991, p. 294-298.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Local structure and chemical shifts for six-coordinated silicon in high-pressure mantle phases
AU - Stebbins, Jonathan F.
AU - Kanzaki, Masami
PY - 1991/1/18
Y1 - 1991/1/18
N2 - Most of the earth's mantle is made up of high-pressure silicate minerals that contain octahedrally coordinated silicon (SiVI), but many thermodynamically important details of cation site ordering remain unknown. Silicon-29 nuclear magnetic resonance (NMR) spectroscopy is potentially very useful for determining short-range structure. A systematic study of silicon-29 chemical shifts for SiVI has revealed empirical correlations between shift and structure that are useful in understanding several new calcium silicates. The observed ordering state of a number of high-pressure magnesium silicates is consistent with the results of previous x-ray diffraction studies.
AB - Most of the earth's mantle is made up of high-pressure silicate minerals that contain octahedrally coordinated silicon (SiVI), but many thermodynamically important details of cation site ordering remain unknown. Silicon-29 nuclear magnetic resonance (NMR) spectroscopy is potentially very useful for determining short-range structure. A systematic study of silicon-29 chemical shifts for SiVI has revealed empirical correlations between shift and structure that are useful in understanding several new calcium silicates. The observed ordering state of a number of high-pressure magnesium silicates is consistent with the results of previous x-ray diffraction studies.
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UR - http://www.scopus.com/inward/citedby.url?scp=0025925899&partnerID=8YFLogxK
M3 - Article
C2 - 17733286
AN - SCOPUS:0025925899
VL - 251
SP - 294
EP - 298
JO - Science
JF - Science
SN - 0036-8075
IS - 4991
ER -