共查询到19条相似文献,搜索用时 62 毫秒
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采用非水体系中牺牲金属阳极的电化学方法分别合成了稀土金属镱与 3 羟基黄酮及 3 羟基 2 甲基 γ 吡喃酮的配合物。对配合物进行了IR和Raman光谱测定。两种光谱提供了互为补充的信息 ,配体经配位后—OH的伸缩振动谱峰消失 ,部分相关的谱峰频率发生了明显位移 ,特别是羰基伸缩振动红移十分明显 ,在Raman光谱的低波数区间检测到可指认为金属和配体键合的伸缩振动。根据这两种光谱的研究结果推断了所得配合物的可能结构。 相似文献
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三硼酸铯和硼酸铯锂晶体的晶格振动光谱研究 总被引:1,自引:0,他引:1
本文对新型非线性光学晶体三硼酸铯(CsB3O5∶CBO)和硼酸铯锂(CsLiB6O10∶CLBO)进行了晶格振动光谱研究。首先对两种晶体的基本晶格振动模进行了对称性分类,记录了两种晶体低温下的拉曼光谱和室温下的红外反射光谱,对晶体的晶格振动模进行了认定,将振动模归属于平面六元环(B3O6)和四面体(BO4)。然后比较了CBO,CLBO和LBO(LiB3O5)三种晶体的晶格振动光谱,讨论了阳离子对振动光谱的影响。另外,还讨论了硼酸盐晶体晶格振动模LO TO分裂的大小与晶体非线性光学系数之间的关系。 相似文献
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用电化学现场表面增强拉曼光谱(SERS)研究了非水体系中苯并三唑(BTAH)在银电极表面的吸附及成膜行为,结果表明非水体系中BTAH的吸附行为随电位变化而不同。较负区间主要以中性分子形式吸附;中间电位区间主要以BTA-吸附并不可逆成膜。采用直接电化学合成技术模拟电极表面过程制备了苯并三唑与Cu, Ag, Fe, Ni和Zn等金属的配合物,并研究了中性配体三苯基膦(pph3)对其配位过程的影响,所得产物的元素分析以及拉曼光谱研究表明pph3的加入影响了Cu和Ag与BTAH的配位过程,并出现在最终产物中,而对BTAH与Ni, Fe和Zn的配位过程未产生影响,产物未出现pph3。 相似文献
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测量并分析了盐酸苯海拉明的红外光谱和拉曼光谱。在Raman光谱中, 1001 cm-1出现一个极强峰, 在1030 cm-1和618 cm-1各有一个中等峰,此外,在红外光谱中, 714 cm-1和757 cm-1附近出现极强的吸收峰,认定这个化合物中存在单取代苯。C-N的对称伸缩振动出现在837 cm-1, 1433 cm-1和1470 cm-1分别为CH2和CH3的变形振动, 在红外光谱中, 1020 cm-1处明显的吸收峰属于C-O-C反对称伸缩振动。此外, 测量得到含量为25 mg苯海拉明药片的拉曼光谱与纯苯海拉明的拉曼峰比较一致, 可作为无损快速检测该药物的手段。 相似文献
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Infrared and Raman spectra of seven new metal (II) 3,4-lutidine tetracyanonickelate complexes, M(3,4 L)2 Ni(CN)4 [where 3,4 L = 3,4 - dimethyl-pyridine or 3,4-lutidine; M = Mn, Fe, Co, Zn, Ni, Cu or Cd] (abbreviated to M - Ni - 3,4 L) have been investigated. Spectroscopic and magnetic susceptibility measurements indicate that the compounds have the structure of Hofmann-type complexes. The copper complex has spectral features different from the other compounds. 相似文献
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The new complexes trans-[PdX2(H4MTO)2] (X = Cl, Br, I), trans-[PdX2(H3MMTO)2] (X = Cl, Br, I), trans-[PdX2(SH3)2] (X = Cl, Br), [Pd(H4MTO)4]CI2 and [Pd(H3MMTO)4]CI2, where H4MTO = monothiooxamide, H3MMTO = N(o)-methylmonothiooxamide and SH3 = N(s)-methylmonothiooxamide, have been prepared. The complexes were characterized by elemental analyses, conductivity measurements, X-ray powder patterns, thermal methods and spectroscopic (UV/VIS, FT-IR, Laser-Raman) studies. The vibrational analysis of the complexes is given using NH/ND and CH3/CD3 isotopic substitutions. Monomeric square planar structures are assigned for the complexes in the solid state. The neutral monothiooxamides behave as monodentate ligands coordinating through their thioamide sulfur atom. The complex [Pd(SH2)2] was isolated during the thermal decomposition of trans-[PdCl2(SH3)2]. 相似文献
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The infrared and Raman spectra of barium oxalate hemihydrate, BaC2O4 · 0.5H2O, were recorded and discussed on the basis of their structural peculiarities and in comparison with the spectra of the previously investigated calcium and strontium oxalates. 相似文献
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The new complexes CuX2(LH2), CuX2 (SH3) (X = Cl, Br), CuX(LH2), CuX(SH3) (X = Cl, Br, I), CuX(H4MTO)2 (X = Cl, Br), Cul(H4MTO) and CuX(H3MMTO)2 (X = Cl, Br, I), where LH2 = N.N′-dimethyl-monothiooxamide, SH3 = N(s)-methylmonothiooxamide, H4MTO = monothiooxamide and H3MMTO = N(o)-methylmonothiooxamide, have been prepared. The complexes were characterized by elemental analyses, conductivity measurements, magnetic moments and spectroscopic (UV/VIS, FT-IR, Laser-Raman) studies. The vibrational analysis of the complexes has been given using NH/ND, CH3/CD3 and 63cu/65cu isotopic substitutions. The neutral monothiooxamides behave as monodentate ligands in the Cu(I) complexes coordinating through their thioamide sulfur atom. The ligands LH2 and SH3 act as bidentate chelating agents in the Cu(II) complexes with ligated atoms being the thioamide sulfur and the amide oxygen. 相似文献
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Raman, infrared and energy dispersive X-ray spectra of monazites have been measured and discussed. The result shows that the mineral is enriched in cerium, lanthanum,neodymium and praseodymium (Ce>La>Nd>Pr), The monazites have marked spectral characteristics, especially their v1, V3 Raman bands and v1, v4 infrared absorption bands. The characteristics can distinguish between monazite and other phosphate minerals. In addition, based on EDS and infrared absorption spectra, a small amount of fluoro-carbonate is found in the monazites. 相似文献
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The assignment and shifts of the carbonyl stretching frequencies in the infrared spectra of the complexes of general formula [M(barb)2L2] (M = Ni, Cu, Zn; barb = 5,5-disubstituted-barbiturate, L = pyridine (py), β-picoline (β-pic), imidazol (imid))are discussed in relation to their known crystal structures. 相似文献
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A short‐range force constant model (SRFCM) has been applied to investigate the Raman and the infrared wavenumbers in Nd2BaZnO5 in its tetragonal phase of space group I4/mcm. Calculations of zone‐center phonons are made with five stretching and five bending force constants. All the Raman and infrared values are then assigned to their corresponding modes. Two Raman modes are reassigned on the basis of group theoretical calculations. The calculated Raman wavenumbers exhibit good agreement with the observed values. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
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Nancy Mancilla Maria C. D'Antonio Ana C. Gonzlez‐Bar Enrique J. Baran 《Journal of Raman spectroscopy : JRS》2009,40(12):2050-2052
The infrared and Raman spectra of anhydrous lead oxalate (PbC2O4) were recorded and discussed on the basis of its structural peculiarities. Some comparisons with other previously investigated metallic oxalates were made. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献