Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, 2 George St, Brisbane, Queensland 4001, Australia.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Feb;75(2):852-4. doi: 10.1016/j.saa.2009.12.012. Epub 2009 Dec 11.
Raman spectra of coquandite Sb(6)O(8)(SO(4))x(H(2)O) were studied, and related to the structure of the mineral. Raman bands observed at 970, 990 and 1007 cm(-1) and a series of overlapping bands are observed at 1072, 1100, 1151 and 1217 cm(-1) are assigned to the SO(4)(2-) nu(1) symmetric and nu(3) antisymmetric stretching modes respectively. Raman bands at 629, 638, 690, 751 and 787 cm(-1) are attributed to the SbO stretching vibrations. Raman bands at 600 and 610 cm(-1) and at 429 and 459 cm(-1) are assigned to the SO(4)(2-) nu(4) and nu(2) bending modes. Raman bands at 359 and 375 cm(-1) are assigned to O-Sb-O bending modes. Multiple Raman bands for both SO(4)(2-) and SbO stretching vibrations support the concept of the non-equivalence of these units in the coquandite structure.
对 Sb(6)O(8)(SO(4))x(H(2)O) 的拉曼光谱进行了研究，并与矿物结构相关联。在 970、990 和 1007 cm(-1) 处观察到的拉曼带和在 1072、1100、1151 和 1217 cm(-1) 处观察到的一系列重叠带分别被分配给 SO(4)(2-) 的 nu(1)对称和 nu(3)反对称伸缩模式。在 629、638、690、751 和 787 cm(-1) 处的拉曼带归因于 SbO 伸缩振动。在 600 和 610 cm(-1) 以及 429 和 459 cm(-1) 处的拉曼带被分配给 SO(4)(2-)的 nu(4)和 nu(2)弯曲模式。在 359 和 375 cm(-1) 处的拉曼带被分配给 O-Sb-O 弯曲模式。SO(4)(2-)和 SbO 伸缩振动的多个拉曼带支持这些单元在 coquandite 结构中不等价的概念。
