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1.
混合二烃基二氯化锡与水杨醛缩苯胺类Schiff减配合物的… 总被引:4,自引:1,他引:4
由混合二烃基二氯化锡与水杨醛缩苯胺类Schiff碱反应,合成了24种新的有机锡配合物。经元素分析、NMR“TG-DSC测定和X射线粉末衍射分析,确定有14种有机锡与Schiff碱的1:1配合物,10种是1:2配合物。配体是以酚羟基氧原子与锡原子配位,摩尔电导率测定表明这些配合物均为非电解质。 相似文献
2.
4-氨基-3,5-二甲基-1,2,4-三唑(TZ)与水杨醛缩合形成4-(邻羟苯基亚甲基)-亚胺-3,5-二甲基-1,2,4-三唑Schiff碱(SATZ),该Schiff碱与Cu(ClO_4)_2·6H_2O形成配合物Cu(satz)_2·6H_2O,分子式为C_(22)H_(22)CuN_8O_2·6H_2O。经X射线晶体结构分析表明,晶体属于单斜晶系,空间群P2_1/c,Z=2,α=8.202(1),b=19.569(4),c=8.972(8)A,β=107.72°(2),V=1371.8(5)A3,Dc=1.46g/cm ̄3,μ=0.853mm ̄(-1),F(000)=630,R=0.051,R_w=0.062。分子中2个偶氮甲碱(-C=N-)中 的N原子及2个酚氧原子与中心Cu原子形成规则的菱形平面结构。 相似文献
3.
4-氨基-3,5-二甲基-1,2,4-三唑与水杨醛缩合形成4-(邻羟苯基亚甲基)-亚胺-03,5-二甲基-1,2,4-三唑Schiff碱(SATZ),该Schiff碱与Cu(ClO4)2.6H2O形成配合物Cu(satz)2.6H2O,分子式为C22H22CuN8O2.6H2O。 相似文献
4.
乙基苯基二氯化锡与2-羟基萘醛缩对甲氧基苯胺Schiff碱1∶1配合物的合成和晶体结构刘宝殿,包明,孙振刚,贺庆林,邢彦,贾恒庆,林永华(东北师范大学化学系,长春,130024)(中国科学院长春应用化学研究所,长春)关键词乙基苯基二氯化锡,Schif... 相似文献
5.
三羰基环戊二烯基钼负离子与1,3-二卤丙烷在一缩二乙二醇二甲醚介质中反应,生成环卡宾配合物CpMoX(CO)_2CO(CH_2)_2CH2(X=Br,I).硅桥连双环戊二烯基三羰基钼负离子与1,3-二卤丙烷顺利地进行类似反应,生成相应的硅桥连双[环卡宾钼配合物]──E[C_5H_4MoX(CO)_2]CO(CH_2)_2CH_2]_2(E=Me_2Si,Me2SiSiMe_2,Me2SiOSiMe_2).化合物硅氧硅桥联二茂二钼环卡宾配合物11的晶体结构经X射线衍射测定,晶体属三斜晶系,P1空间群,晶体学数据:a=0.8188(1)nm,b=1.045(3)nm,c=2.3252(4)nm,α=94.14(2)°,β=94.09(1)°,γ=102.48(2)°,V=1.9306nm ̄3,Z=2,D_c=1.854g/cm ̄3。 相似文献
6.
作为系统研究大环硫氮杂冠醚配合物的第二部分,合成了四硫二氮杂环十八冠的硝酸铜配合物[Cu(C_(12)H_(26)N_2S_4)]·(NO_3)_2·H_2O,测定了元素分析和红外光谱。利用X-射线衍射分析方法,测定其晶体结构。晶体学参数a=17.576(4),b=11.753(3),c=10.485(5),V=2163.9(7),Z=4,D_c=1.632g/cm ̄3,F(000)=1108,μ=1.42cm ̄(-1)(MoKα),最终偏离因子R=0.032和Rw=0.034。晶体测定结果表明:有杂原子组成的四硫二氮大环冠醚比含氧冠醚有更大的柔变性;四硫二氮大环冠醚与Cu离子配位前后,大环的构象发生了变化。 相似文献
7.
在四氢呋喃中合成了Schiff碱配体N,N'-二(2-羟基苄烯)-2-羟基苯甲基二胺(SB)与二阶过渡金属镍、铜、锌的三核或双核配合物;用钠汞齐还原SB得到了其氢化物N,N'-二(2-羟基苄基)-2-羟基苯甲基二胺(HSB),并在乙醇中合成了经与铜的双核配合物。对这些配合物进行了元素分析和热分析,并测定了电导、红外光谱和紫外光谱,确定了分子式,讨论了可能的配位结构。 相似文献
8.
在四氢呋喃中合成了Schiff碱配体N,N'-二(2-羟基苄烯)-2-羟基苯甲基二胺(SB)与二价过渡金属镍、铜、锌的三核或双核配合物;用钠汞齐还原SB得到了其氢化物N,N'-二(2-羟基苄基)-2-羟基苯甲基二胺(HSB),并在乙醇中合成了它与铜的双核配合物。对这些配合物进行了元素分析和热分析,并测定了电导、红外光谱和紫外光谱,确定了分子式,讨论了可能的配位结构。 相似文献
9.
利用1,6-二溴己烷将Schiff碱镍金属配合物和吡啶杂环分子联接起来,合成了一类新的六亚甲基桥链化合物(LNi(O(CH2)6Py)Br2),并进行了表征和溶解度测定。这类桥链化合物具有良好的脂溶性,从而提高了这类Schiff碱金属配合物在有机溶剂中的溶解性,为进一步研究这类金属配合物的反应性能提供了方便。 相似文献
10.
本文以2.6─二乙酰吡啶和1,3一二氨基一2一丙醇通过模板合成西佛碱大环配体H_2L(图1),并合成了它的Co(Ⅱ)、Ni(Ⅱ)及Fe(Ⅱ)的双核配合物,重点讨论了Co_2(HL)(ClO_4)_2(NO_3)·4H_2O配合物的光谱与磁性。变温磁化率数据(4─300K)通过用最小二乘法与理论方程拟合,得到磁参数为J=-1.24cm ̄(-1),θ=-0.24K,表明配合物中co(Ⅱ)-Co(Ⅱ)间存在弱的反铁磁相互作用,分子间也存在反铁磁相互作用。 相似文献
11.
T. A. Rumyantseva E. S. Tarasova E. S. Maltseva G. P. Shaposhnikov 《Russian Journal of General Chemistry》2020,90(1):118-122
Metal complexes (metal: ligand = 1 : 1) have been obtained via the reaction of 4-R-5-nitrophthalonitriles with erbium and lutetium acetates and chlorides. 1 : 2 heteroleptic complexes have been synthesized based on them, containing unsubstituted and octasubstituted phthalocyanine ligands at the metal atom. The products have been characterized by a set of physico-chemical methods. 相似文献
12.
Yadav S Singh RV 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,78(1):298-306
Biological important complexes of boron(III) derived from 1-acetylferrocenehydrazinecarboxamide (L1H), 1-acetylferrocenehydrazinecarbothioamide (L2H) and 1-acetylferrocene carbodithioic acid (L3H) have been prepared and investigated using a combination of microanalytical analysis, melting point, electronic, IR, 1H NMR and 13C NMR spectral studies, cyclic voltammetry and X-ray powder diffraction studies. Boron isopropoxide interacts with the ligands in 1:1, 1:2 and 1:3 molar ratios (boron:ligand) resulting in the formation of coloured products. On the basis of conductance and spectral evidences, tetrahedral structures for boron(III) complexes have been assigned. The ligands are coordinated to the boron(III) via the azomethine nitrogen atom and the thiolic sulfur atom/enolic oxygen atom. On the basis of X-ray powder diffraction study one of the representative boron complex was found to have orthorhombic lattice, having lattice parameters: a=9.9700, b=15.0000 and c=7.0000. Both the ligands and their complexes have been screened for their biological activity on several pathogenic fungi and bacteria and were found to possess appreciable fungicidal and bactericidal properties. Plant growth regulating activity of one of the ligand and its complexes has also been recorded on gram plant, and results have been discussed. 相似文献
13.
G. Schetty 《Helvetica chimica acta》1970,53(6):1437-1459
From the dimensions described in previously known X-ray structure analyses and from NMR.-spectroscopical datas of a 1:2 CoIII complex it is concluded that metal chelates of two and tri-dentated azo compounds are present in the diketo or quinone mono hydrazone form, provided that such a form is possible. As the metal atoms replaces the hydrazone proton the coordinating nitrogen atom can be predetermined. For the first time in the case of 1:2 Cr complexes from o,o'-dihydroxy azo compounds small amounts of byproducts have been observed which have the empirical composition of the main complexes. As the coordinated nitrogen atom is sp3-hybridized, its three bonds should be arranged in a pyramidal form. Therefore the ligands should be slightly bent. In the 1:2 Cr complexes where two of these ligands are coordinated to the metal atom perpendicularly to each other (Drew-Pfitzner-arrangement) 3 conformers (+ 3 mirror images) are possible. These conformers are ascribed to one group of the observed isomeric complexes. For another group it is supposed that at least one ligand is coordinated in the plane azo form. The postulated thrice bonded nitrogen atom possesses the requirements for a high inversion barrier: it is a member of two ortho condensed rings; moreover, it is bound to a Lewis acid. No such system seems to have been described, but in some published X-ray structure analyses, there is evidence to be found of its existence. 相似文献
14.
Seurre N Le Barbu-Debus K Lahmani F Zehnacker A Borho N Suhm MA 《Physical chemistry chemical physics : PCCP》2006,8(8):1007-1016
Jet-cooled diastereoisomeric complexes formed between a chiral probe, (+/-)-2-naphthyl-1-ethanol, and chiral lactic acid derivatives have been characterised by laser-induced fluorescence and IR fluorescence-dip spectroscopy. Complexes with non chiral alpha-hydroxyesters and chiral beta-hydroxyesters have also been studied for the sake of comparison. DFT calculations have been performed to assist in the analysis of the vibrational spectra and the determination of the structures. The observed 1 : 1 complexes correspond to the addition of the hydroxy group of the chromophore on the oxygen atom of the hydroxy in alpha-position relative to the ester function. Moreover, (+/-)-methyl lactate and (+/-)-ethyl lactate complexes with (+/-)-2-naphthyl-1-ethanol show an enantioselectivity in the size of the formed adducts: while fluorescent 1 : 1 complexes are the most abundant species observed when mixing (S)-2-naphthyl-1-ethanol with (R)-methyl or ethyl lactate, they are absent in the case of the SS mixture, which only shows 1 : 2 adducts. This property has been related to steric hindrance brought by the methyl group on the hydroxy-bearing carbon atom. 相似文献
15.
The uranyl complexes of EDTA have been studied by potentiometry ; stability constants of the 1:1 and 2:1 (metal to ligand) chelates have been determined, as well as the respective hydrolysis and polymerization constants. Possible structures for these species are discussed. To account for the abnormally high stability of UO(2)(H(2)O)HL-, hydrogen bonding between a protonated nitrogen atom of the ligand and one oxygen atom of UO(2)(2+) is suggested. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(6):1025-1034
A new bis-pyrazole derivative, 2,6-bis-(5-phenyl-1H-pyrazol-3-yl) pyridine (H2BPPP), and two d10 metal complexes [Zn(H2BPPP)Cl2](DMF)2 (1), [Cd(H2BPPP)Cl2](DMF)2 (2) have been synthesized and characterized. There is a tautomeric equilibrium of the bis-pyrazole compound in solution and the H atom of pyrazolyl NH can transfer to the adjacent N atoms. X-ray structure analyses reveal the H atom is on the 2-position of pyrazolyl ring in donor solvents, while the H atom is on the 1-position of pyrazolyl ring in metal complexes. The luminescence of the ligand and complexes have been investigated. 相似文献
17.
Yamada Kaoru Matsutani Shigeaki Uchiyama Akira Takahashi Toshio 《Journal of inclusion phenomena and macrocyclic chemistry》1991,11(1):49-54
Analyses of crown ether complexes of alkali metal ions and characterization of the complexes formed inm-nitrobenzyl alcohol have been carried out by fast atom bombardment (FAB) mass spectrometry. By using m-nitrobenzyl alcohol as a matrix for measurements, the stoichiometry of the complexes was assessed on the basis of the observed FAB peaks. In addition, the formation of crown ether-alkali metal complexes at a 2 : 1 molar ratio was enhanced by increasing the ionic radius of the metal ion in agreement with previous observations. On these grounds, FAB mass spectrometry may provide a rapid means for investigation of the complexation behavior of crown ethers and the stoichiometry of the complexes. 相似文献
18.
The 1:1 and 2:1 complexes of chiral bis(5H-pyrroles) and bis(oxazolines) with the lithium cation have been studied by means of DFT methods (B3LYP/6-31G and B3LYP/6-311+G). The energetic, geometric, electronic, and orbital properties of the complexes have been analyzed. The chiral discrimination in the 2:1 complexes (homo vs heterochiral ones) indicate that in all the cases the heterochiral complexes are more stable than the homochiral ones, except for the tert-butyl derivatives. The chiral discrimination energies will be discussed on the basis of different parameters related to the lithium atom such as the N-Li distance, the orbital interaction between the lone pair of the nitrogen and an empty orbital of the lithium, and its atomic contribution to the total energy of the complexes. 相似文献
19.
Muhammad Hanif Mukhtiar Hussain Moazzam H. Bhatti Saqib Ali Helen S. Evans 《Structural chemistry》2008,19(5):777-784
Four new complexes, [Ph3Sn(isopropylACDA)] (1), [Ph2SnCl(isopropylACDA)] (2), [Ph3Sn(secbutylACDA)] (3), and [Ph2SnCl(secbutylACDA)] (4), have been prepared from reaction between N-alkylated 2-amino-1-cyclopentene-1-carbodithioic acids (ACDA) with Ph2SnCl2 and Ph3SnCl in 1:1 ratio. All complexes are characterized by FTIR, multinuclear NMR (1H, 13C, and 119Sn) and mass spectrometry. In all complexes, the S–H proton has been removed and coordination takes place through the carbodithioate
moiety. The 119Sn NMR data are consistent with five coordination of tin atom in solution. Complexes 2, 3, and 4 have also been confirmed by single X-ray crystallography. All three crystals are triclinic with space group P − 1. In complexes 2 and 4, the geometry around tin atom is distorted trigonal bipyramidal while in 3 the geometry is in between distorted tetrahedral and trigonal bipyramid. In all three structures, ligands are asymmetrically
coordinated to tin atom. In addition, crystal structures are further stabilized by N–H···S hydrogen bonding. 相似文献
20.
Mohammad Solimannejad Masumeh Gharabaghi Ibon Alkorta Goar Sánchez-Sanz 《Structural chemistry》2012,23(3):847-856
Ab initio calculations at MP2 computational level using aug-cc-pVTZ basis set were used to analyze the interactions between
1:1 and 1:2 complexes of acetylene and nitrosyl hydride. The structures obtained have been analyzed with the atoms in molecules
and the density functional theory–symmetry adapted perturbation theory methodologies. Four minima were located on the potential
energy surface of the 1:1 complex. Twenty-four different structures have been obtained for the 1:2 complexes. Five types of
interactions are observed, CH···O, CH···N, NH···π hydrogen bonds and orthogonal interactions between the π clouds of triple
bond, or the lone pair of oxygen with the electron-deficient region of the nitrogen atom. Stabilization energies of the 1:1
and 1:2 clusters including basis set superposition error and ZPE are in the range 3–8 and 6–17 kJ mol−1 at MP2/aug-cc-pVTZ computational level, respectively. Blue shift of NH bond upon complex formation in the ranges between
18–30 and 20–96 cm−1 is predicted for 1:1 and 1:2 clusters, respectively. The total nonadditive energy in the 1:2 cluster, calculated as the sum
of the supermolecular nonadditive MP2 energy and the three-body dispersion energy, presents values between −1.48 and 1.20 kJ mol−1. 相似文献