首页> 外文期刊>Journal of chemical crystallography >Cis-trans Isomerism at Square-Planar MN_2S_2 Centers (M = Pd, Pt): Crystal Structures of N-Phenyl-N-(2-thiazoyl)thiourea Complexes trans-Pd(S_2N_3C_(10)H_8)_2 and cis-Pt(S_2N_3C_(10)H_8)_2 and Density Functional Calculations
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Cis-trans Isomerism at Square-Planar MN_2S_2 Centers (M = Pd, Pt): Crystal Structures of N-Phenyl-N-(2-thiazoyl)thiourea Complexes trans-Pd(S_2N_3C_(10)H_8)_2 and cis-Pt(S_2N_3C_(10)H_8)_2 and Density Functional Calculations

机译:在正方形平面MN_2S_2中心处的顺反异构(M = Pd,Pt):N-苯基-N-(2-噻唑基)硫脲复合物trans-Pd(S_2N_3C_(10)H_8)_2和cis-Pt( S_2N_3C_(10)H_8)_2和密度泛函计算

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Simple palladium(II) and platinum(II) complexes, ML_2 (1-2), of N-phenyl-(2-thiazoyl)thiourea have been prepared and fully characterized. The structure of Pd(S_2N_3C_(10)H_8)_ 2 (1) is monoclinic P2_1 /c, a = 12.510(2), b = 5.6963(6), c = 15.322(2) ?, b = 90.07(2)~o and Pt(S_2N_ 3C_(10)H_8)_2 (2) is orthorhombic P2_ 1 2_ 1 2_ 1, a = 7.3021(5), b = 11.8025(9), c = 25.628(2) ?. In both complexes the ligands bind in a chelate fashion through the nitrogen atom of the thiazole ring and the sulfur atom of the thiourea to give six-membered chelate rings. In 1 the metal ion sits on an inversion center and the two ligands adopt a relative trans-disposition of like atoms, while in 2 all atoms are unique and the ligands are in a relative cis-disposition. DFT calculations on the cis and trans isomers based on 1 and 2 reveal that each pair of isomers is isoenergetic in the gas phase. Graphical Abstract: Simple palladium(II) and platinum(II) complexes, M(S_2N_ 3C_(10)H_8)_2, of N-Phenyl-(2-thiazoyl) thiourea have been prepared and fully characterized. In both complexes the ligands bind in a chelate fashion through the nitrogen atom of the thiazole ring and the sulfur atom of the thiourea to give six-membered chelate rings. In the palladium complex the metal ion sits on an inversion center and the two ligands adopt a relative trans-disposition of like atoms, while for platinum all atoms are unique and the ligands are in a relative cis-disposition. DFT calculations on the cis and trans isomers based on 1 and 2 reveal that each pair of isomers is isoenergetic in the gas phase. [Figure not available: see fulltext.]
机译:制备了N-苯基-(2-噻唑基)硫脲的简单钯(II)和铂(II)配合物ML_2(1-2),并进行了充分表征。 Pd(S_2N_3C_(10)H_8)_2(1)的结构为单斜P2_1 / c,a = 12.510(2),b = 5.6963(6),c = 15.322(2)α,b = 90.07(2) 〜o和Pt(S_2N_ 3C_(10)H_8)_2(2)是正交晶体P2_1 2_1 1 2_1,a = 7.3021(5),b = 11.8025(9),c = 25.628(2)?在这两种络合物中,配体都通过噻唑环的氮原子和硫脲的硫原子以螯合方式结合,形成六元螯合环。在1中,金属离子位于一个反转中心,两个配体采用相似原子的相对转位,而在2中,所有原子都是唯一的,且配体处于相对顺位。基于1和2的顺式和反式异构体的DFT计算表明,每对异构体在气相中都是等能量的。图形摘要:制备了N-苯基-(2-噻唑基)硫脲的简单钯(II)和铂(II)配合物M(S_2N_ 3C_(10)H_8)_2。在这两种络合物中,配体都通过噻唑环的氮原子和硫脲的硫原子以螯合方式结合,形成六元螯合环。在钯络合物中,金属离子位于一个反转中心,两个配体采用相似原子的相对转位,而对于铂,所有原子都是唯一的,并且配体处于相对的顺位。基于1和2的顺式和反式异构体的DFT计算表明,每对异构体在气相中都是等能量的。 [图不可用:请参见全文。]

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