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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Crystal structure, infrared and Raman spectra of copper trihydrogenperiodate monohydrate, CuH3IO6 center dot H2O [German]
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Crystal structure, infrared and Raman spectra of copper trihydrogenperiodate monohydrate, CuH3IO6 center dot H2O [German]

机译:一水合三氢高碘酸铜,CuH3IO6中心点H2O的晶体结构,红外光谱和拉曼光谱[德国]

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摘要

The hitherto unknown compound CuH3IO6 . H2O was studied by X-ray, IR- and Raman spectroscopic methods. The crystal structure was determined by X-ray single-crystal studies (space group P2(1)2(1)2(1), Z=4, a=532.60(10), b= 624.00(10), c=1570.8(3) pm, R1=1.85%, 1559 unique reflections (I > 2 sigma (I))). Isolated, meridionally configurated H3IO62- ions are coordinated to the copper ions forming double-ropes in [100]. These ropes are connected in [010] and [001] by hydrogen bonds. The copper ions possess a square pyramidal coordination with the hydrate H2O on top. The infrared and Raman spectra as well as group theoretical treatment are presented and discussed with respect to the strength of the hydrogen bonds and the co-ordination of the CuO5(+1) polyhedra and the H3IO62- ions at the C-1 lattice sites. The hydrogen bonds of the H2O molecules and H3IO62- ions (HO-H . . . O-IO5H3 and H2IO5O-H . . . O-IO5H3) greatly differ in strength, as shown from both the respective O . . . O distances: 282.6 and 298.6 pm (H2O), and 258.8, 259.7, and 270.9 pm (H3IO62-) and the OD stretching modes of isotopically dilute samples: 2498 and 2564 cm(-1) (90 K) (HDO), and 1786, 2024, and 2188 cm(-1) (H2DIO62-). The IO stretching modes of the H3IO62- ions (696-758 cm(-1) and 555-658 cm(-1), 295 K) display the different strength of the respective I-O and I-O(H) bonds (r(I-O): 181.1-158.3 pm and 189.2-194.5 pm). [References: 40]
机译:迄今为止未知的化合物CuH3IO6。通过X射线,IR和拉曼光谱法研究了H2O。通过X射线单晶研究(空间群P2(1)2(1)2(1),Z = 4,a = 532.60(10),b = 624.00(10),c = 1570.8)确定晶体结构(3)pm,R1 = 1.85%,1559次唯一反射(I> 2 sigma(I))。在[100]中,经子午配置的H3IO62-离子与形成双绳的铜离子配位。这些绳索通过氢键连接在[010]和[001]中。铜离子与顶部的水合物H2O呈方形金字塔状配位。就氢键的强度以及C-1晶格位置处的CuO5(+1)多面体和H3IO62-离子的配位,给出了红外和拉曼光谱以及基团理论处理方法,并进行了讨论。 H 2 O分子和H 3 O 62-离子(HO-H ... O-IO5H3和H2IO5O-H ... O-IO5H3)的氢键强度差异很大,如从各自的O. 。 。 O距离:282.6和298.6 pm(H2O),以及258.8、259.7和270.9 pm(H3IO62-),同位素稀释样品的OD拉伸模式:2498和2564 cm(-1)(90 K)(HDO),以及1786、2024和2188 cm(-1)(H2DIO62-)。 H3IO62-离子(696-758 cm(-1)和555-658 cm(-1),295 K)的IO拉伸模式显示了各自的IO和IO(H)键(r(IO) :181.1-158.3 pm和189.2-194.5 pm)。 [参考:40]

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