Variability in the coordination modes of 2-pyridineformamide thiosemicarbazone (HAm4DH) in some zinc(II), cadmium(II), and mercury(II) complexes

Bermejo E; Castineiras A; Garcia-Santos I; West DX

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Variability in the coordination modes of 2-pyridineformamide thiosemicarbazone (HAm4DH) in some zinc(II), cadmium(II), and mercury(II) complexes

机译：某些锌（II），镉（II）和汞（II）络合物中2-吡啶甲酰胺硫代半碳酰胺（HAm4DH）配位模式的变异性

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The reduction of 2-cyanopyridine by sodium in dry methanol in the presence of thiosemicarbazide produces 2-pyridine-formamide thiosemicarbazone, HAm4DH, The reactions of the potentially tridentate ligand HAm4DH with salts of Zn, Cd, and Hg gave a variety of metal-ligand complexes. The complexes were characterized by mass spectrometry as well as IR and multinuclear NMR (H-1, C-13, C-13 CP/MAS, Cd-113, Hg-199) spectroscopy. The crystal structures of [Zn(Am4DH)(OAc)](2)-H2O, [Hg(HAm4DH)(2)Br-2](C2H5OH)-C-. and (1)(infinity)[Hg(mu-S-Am4DH)Br] were obtained. Coordination of anionic Am4DH(-) occurs through the pyridyl nitrogen, imine nitrogen and thiolato sulfur atoms, while the neutral ligands in [Hg(HAm4DH)(2)Br-2] coordinate as monodentate ligands through their thione sulfur atoms. One of the acetate ligands in [Zn(Am4DH)(OAc)](2)(H2O)-H-. is bridging monodentate and the other bridging bidentate. (1)(infinity)[Hg(mu-S-Am4DH)Br] features five-coordinate mercury centers with bridging thiolato sulfur atoms. The intermolecular arrangement is dictated by hydrogen bonding from the amino groups and by pi-pi stacking of the pyridine rings.

机译：在硫代氨基脲的存在下，在干燥的甲醇中用钠将2-氰基吡啶还原，生成2-吡啶-甲酰胺硫代氨基脲HAm4DH。潜在的三齿配体HAm4DH与Zn，Cd和Hg的盐反应生成了各种金属配体复合体。通过质谱以及IR和多核NMR（H-1，C-13，C-13CP / MAS，Cd-113，Hg-199）光谱对复合物进行表征。 [Zn（Am4DH）（OAc）]（2）-H2O，[Hg（HAm4DH）（2）Br-2]（C2H5OH）-C-的晶体结构。得到（1）（无穷大）[Hg（mu-S-Am4DH）Br]。阴离子Am4DH（-）的配位通过吡啶基氮，亚胺氮和硫醇基硫原子发生，而[Hg（HAm4DH）（2）Br-2]中的中性配体通过其硫酮硫原子作为单齿配体进行配位。 [Zn（Am4DH）（OAc）]（2）（H2O）-H-中的乙酸盐配体之一。是桥接单齿，而另一个桥接双齿。（1）（无穷大）[Hg（mu-S-Am4DH）Br]具有五个配位的硫原子与硫原子桥接的汞中心。分子间的排列是由氨基上的氢键和吡啶环的π-π堆积决定的。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2005年第11期|共9页
作者
Bermejo E; Castineiras A; Garcia-Santos I; West DX;
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正文语种 eng
中图分类化学;
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thiosemicarbazones; zinc; cadmium; mercury; pi-pi stacking; crystal structure; METAL-COMPLEXES; COPPER(II) COMPLEXES; NICKEL(II) COMPLEXES; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURES; NMR-SPECTROSCOPY; N(4)-DIMETHYLTHIOSEMICARBAZONE; LIGANDS; 3-PIPERIDYLTHIOSEMICARBAZONE; N(4)-METHYLTHIOSEMICARBAZONE;

机译：硫半脲;锌;镉;汞;pi-pi堆积;晶体结构;金属络合物;铜（II）络合物;镍（II）络合物;分子结构;晶体结构;NMR光谱;N（4）-二甲基噻吩;配体;3-哌啶基噻唑烷酮;N（4）-甲基噻吩基咪唑酮;

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1. Variability in the coordination modes of 2-pyridineformamide thiosemicarbazone (HAm4DH) in some zinc(II), cadmium(II), and mercury(II) complexes [J] . Bermejo E, Castineiras A, Garcia-Santos I, Zeitschrift fur Anorganische und Allgemeine Chemie . 2005,第11期

机译：某些锌（II），镉（II）和汞（II）络合物中2-吡啶甲酰胺硫代半碳酰胺（HAm4DH）配位模式的变异性
2. Synthesis,Characterization,and Properties of Some Copper(II) Complexes of 2-Pyridineformamide Thiosemicarbazone (HAm4DH) [J] . Maria del Carmen Aguirre, Joaquin Borras, Alfonso Castineiras, European journal of inorganic chemistry . 2006,第6期

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Variability in the coordination modes of 2-pyridineformamide thiosemicarbazone (HAm4DH) in some zinc(II), cadmium(II), and mercury(II) complexes

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