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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Syntheses, Vibrational Spectra, and Normal Coordinate Analysis of Halogenonitrosylruthenates [Ru(NO)Cl_nbr_(5-n)]~(2-), n = 0-5, and the Crystal Structure of (CH_2py_2)[Ru(NO)ClBr_4]
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Syntheses, Vibrational Spectra, and Normal Coordinate Analysis of Halogenonitrosylruthenates [Ru(NO)Cl_nbr_(5-n)]~(2-), n = 0-5, and the Crystal Structure of (CH_2py_2)[Ru(NO)ClBr_4]

机译:卤代亚硝酰基钌酸盐[Ru(NO)Cl_nbr_(5-n)]〜(2-),n = 0-5的合成,振动光谱和正态坐标分析,以及(CH_2py_2)[Ru(NO)ClBr_4]的晶体结构

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摘要

By treatment of [Ru(NO)Cl_5]~(2-) with anhydrous HBr in dichloromethane a mixture of [Ru(NO)Cl_nBr_(5-n)]~(2-), n = 0-5, is formed, from which individual complexes can be separated by ion exchange chromatography on diethylaminoethyl cellulose. The X-Ray structure determination on a single crystal of (CH_2py_2)[Ru(NO)ClBr_4] (monoclinic, space group P2_1/c, a = 11.480(2), b = 10.175(4), c = 16.025(6) A, #beta# = 107.40(1) deg, Z = 4) reveals, that the chlorine atom is trans positioned to the nitrosyl group. The low temperature IR and Raman spectra have been recorded of six complexes of the series (n-Bu_4N)_2[Ru(NO)Cl_nBr_(5-n)], n = 0-5, and are assigned by normal coordinate analysis. A good agreement between observed and calculated frequencies is achieved. The valence force constants are f_d(NO) = 13.86-13.93 und f_d(RuN) = 5.43-5.49 mdyn/A.
机译:通过在二氯甲烷中用无水HBr处理[Ru(NO)Cl_5]〜(2-),形成[Ru(NO)Cl_nBr_(5-n)]〜(2-)的混合物,n = 0-5,可以通过二乙基氨基乙基纤维素上的离子交换色谱从中分离出各个复合物。 (CH_2py_2)[Ru(NO)ClBr_4](单斜晶系,空间群P2_1 / c,a = 11.480(2),b = 10.175(4),c = 16.025(6)的单晶的X射线结构测定A,#beta#= 107.40(1)deg,Z = 4)表明,氯原子易位至亚硝酰基。记录了(n-Bu_4N)_2 [Ru(NO)Cl_nBr_(5-n)]系列的六个配合物的低温IR和拉曼光谱,n = 0-5,并通过法向坐标分析进行分配。在观察到的频率和计算出的频率之间达成了良好的一致性。价常数为f_d(NO)= 13.86-13.93和f_d(RuN)= 5.43-5.49 mdyn / A。

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