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Identification of a mid-infrared electronic absorption band of Fe2+ in the distorted M(2) site of Orthopyroxene, (Mg, Fe)SiO3

✍ Scribed by Don S. Goldman; George R. Rossman

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
171 KB
Volume
41
Category
Article
ISSN
0009-2614

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✦ Synopsis

An electronic absorption band of Fe*+ in the distorted, six-coordinate M(2) site of the common mineraf orthopyroxene, (Mg, Fe)SiOs, is rdentified at 2350 cm-' . lT& band is attributed to the Al -+ Bs transition within the split 'T,S st3tc of Fe" in C,, symmetry.

Electronic absorption bands can be expected to ' WAVELENGTH (NM) Wk%'ENUMBEP krv~-')

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Conformational substates of the Fe2+-His
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## We measured the Y ~~-~, ~ Raman band of horse heart deoxymyoglobin and human deoxyhemoglobin as a function of temperature between 10 and 300 K. A self-consistent spectral analysis of the deoxymyoglobin Raman band reveals that it is underlied by three different sublines with frequencies at f l ,