type C-H...Cl and length 3.591 A. The chloro and iodo derivatives of the lutidine N-oxide have also been synthesized and their properties are compared to those of the bromo complex. The FTIR and FT Raman spectra as well as electron absorption and emission spectra have been recorded and analyzed in terms of site symmetry and energy level scheme of praseodymium(III) ion. In addition, the europium analogue
一种新的 PrCl 3 (BrCH 3 OC 7 H 7 NO) 3 化合物的 X 射线结构已被确定并描述在单斜空间群 P2 1 /n 中,每个晶胞有四个分子,尺寸为:a=8.232, b=23.733 , c=16.763 A 和 β=90.75°。Pr 3+ 离子与3-溴-4-甲氧基-2,6-二
甲基吡啶部分的N-氧化物基团的三个Cl离子和三个氧离子六配位。分子通过类型为 CH...Cl 且长度为 3.591 A 的氢键连接。二
甲基吡啶 N-氧化物的
氯和
碘衍
生物也已合成,并将它们的性质与
溴络合物的性质进行比较。根据
镨 (III) 离子的位点对称性和能级方案,记录和分析了 FTIR 和 FT 拉曼光谱以及电子吸收和发射光谱。此外,