Coleyshaw Esther E, Crump Gregory, Griffith William P
Department of Chemistry, Imperial College of Science, Technology and Medicine, London SW7 2AY, UK.
Spectrochim Acta A Mol Biomol Spectrosc. 2003 Aug;59(10):2231-9. doi: 10.1016/s1386-1425(03)00067-2.
The Raman (200-4000 cm(-1)) and infrared (600-4000 cm(-1)) spectra of four rare carbonate hydrate minerals are reported. These are naturally occurring and synthetic ikaite CaCO3.6H2O, and nesquehonite MgCO3.3H2O; natural monohydrocalcite CaCO3.H2O, and synthetic lansfordite MgCO3.5H2O. The spectra of synthetic ikaite partially substituted with 2H2O and also with 13C were measured, as were those of synthetic deuteriated nesquehonite. Spectra of ikaite and lansfordite, both of which decompose at room temperatures, were measured below 0 degrees C. Assignments of fundamental modes are proposed.
报道了四种稀有碳酸盐水合物矿物的拉曼光谱（200 - 4000 cm⁻¹）和红外光谱（600 - 4000 cm⁻¹）。它们是天然存在的和合成的六水合碳酸钙钙霞石（ikaite）CaCO₃·6H₂O、三水合碳酸镁镍华（nesquehonite）MgCO₃·3H₂O；天然的一水合碳酸钙碳羟钙石（monohydrocalcite）CaCO₃·H₂O以及合成的五水合碳酸镁水菱镁矿（lansfordite）MgCO₃·5H₂O。还测量了部分被2H₂O以及¹³C取代的合成钙霞石的光谱，以及合成氘代镍华的光谱。对在室温下会分解的钙霞石和水菱镁矿，在0℃以下测量了它们的光谱。提出了基本振动模式的归属。
