【摘要】 本文应用赵尚勃等近年来提出的一种简化强场方案,对蔷薇辉石中Fe²⁺离子的配位对称性与光学吸收谱进行了理论分析。结果表明M₄晶位近于C₂对称,这一点与Marshall和Runciman的估计一致;但能谱的标识与他们很不相同,特别是,基态不是A′而是A″,8000cm^-1带不是源于M₄位,而是M_1-3位中的O_A跃迁。更多还原

【Abstract】 The coordination symmetry and the absorption spectrum of Fe²⁺ ions in rhodonite were studied by means of a recently proposed simplified strong-field scheme. The results show that the symmetry of M₄ site is nearly C₃, this consist with the estimate made by Mar shall and Runciman. But the assignment of the bands is quite different from that made by them, especially the ground state is A" instead of A’, the band at 8000 cm^-1 is due to the O_h transition of the sites M_1-3 instead of the C₃ transition of the M₄ site.更多还原