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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >SYNTHESIS AND CHARACTERIZATION OF CIS- AND TRANS-TETRACHLOROBIS(PYRIDINE)PLATINUM(IV)
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SYNTHESIS AND CHARACTERIZATION OF CIS- AND TRANS-TETRACHLOROBIS(PYRIDINE)PLATINUM(IV)

机译:顺铂和反式四氯化胆碱(吡啶)的合成与表征

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摘要

Na(15-cr-5)](2)[PtCl6]. 2H(2)O reacts with pyridine in water as solvent to give cb-[PtCl4(py)(2)] (1) and in MeCN, DMF or in CH2Cl2 to give trans-[PtCl4(py)(2)] (2). The substitution reaction can be accelerated by irradiation with visible light. 1 isomerizes to give 2 in DMSO, DMF and MeCN as well as in solid state at 503 K. 1 and 2 were thoroughly characterized IR and Raman spectroscopically. The molecular structure of the trans isomer 2 was also established by X-ray structure analysis (monoclinic, C2/m, a = 14.143(5), b = 7.171(3), c = 7.199(3) Angstrom, beta = 116.42(4)degrees, Z = 2, R-1 = 0.0331, wR(2) = 0.0727). 2 has nearly D-2h symmetry with two trans standing pyridine ligands lying in a plane. According to quantum chemical calculations, 2 (D-2h symmetry) is more stable (48.28 kJ/mol) than 1(C-2v symmetry). [References: 17
机译:Na(15-cr-5)](2)[PtCl6]。 2H(2)O与吡啶在水中作为溶剂反应生成cb- [PtCl4(py)(2)](1),在MeCN,DMF或CH2Cl2中反应生成反-[PtCl4(py)(2)]( 2)。取代反应可以通过可见光照射来促进。 1异构体在DMSO,DMF和MeCN中以及在503 K时呈固态,得到2。1和2用光谱和红外光谱进行了彻底表征。反式异构体2的分子结构也通过X射线结构分析确定(单斜晶系,C2 / m,a = 14.143(5),b = 7.171(3),c = 7.199(3)埃,beta = 116.42( 4)度,Z = 2,R-1 = 0.0331,wR(2)= 0.0727)。 2具有几乎D-2h对称性,其中两个反式吡啶配体位于平面中。根据量子化学计算,2(D-2h对称)比1(C-2v对称)更稳定(48.28 kJ / mol)。 [参考:17

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