共查询到20条相似文献,搜索用时 15 毫秒
1.
Jesús Castro Santiago Cabaleiro Paulo Prez‐Lourido Jaime Romero Jos A. García‐Vzquez Antonio Sousa 《无机化学与普通化学杂志》2002,628(5):1210-1217
A series of [(4‐methylphenyl)sulfonyl]‐1H‐amido‐2‐phenyl‐2‐oxazoline ligands, HTs‐ROz, has been synthesized by the reaction of substituted 2‐(2‐aminophenyl)oxazolines and p‐toluensulfonyl chloride. The electrochemical oxidation of a sacrificial zinc anode in an acetonitrile solution of the corresponding ligand gave compounds of general formula [Zn(Ts‐ROz)2]. All complexes have been characterized by microanalysis, IR and 1H NMR spectroscopy and single‐crystal X‐ray diffraction. In all cases, the metal atom is coordinated by the nitrogen atoms of two monoanionic ligands. 相似文献
2.
Inmaculada Beloso Jesús Castro Jos A. GarcíaVzquez Paulo PrezLourido Jaime Romero Antonio Sousa 《无机化学与普通化学杂志》2003,629(2):275-284
Electrochemical oxidation of cadmium in an acetonitrile solution of N‐2‐pyridyl‐sulfonamides (HL) afforded cadmium coordination compounds of composition [CdL2]. Heteroleptic complexes of composition [CdL2L′] (L′ = 2, 2′‐bipyridine or 1, 10‐phenanthroline) were obtained when the coligand L′ was added to the electrolytic phase. The crystal structures of several compounds have been determined by X‐ray diffraction. In all cases the cadmium atom is hexacoordinated, but the coordinative behaviour of the N‐2‐pyridyl‐sulfonamide ligand depends on the location of the substituents in the pyridyl ring. When the substituent is in position 3, the ligands act as N, O‐donors. In all other cases, the ligands act as N, N′‐bidentate systems. 相似文献
3.
Elena Labisbal Laura Rodríguez Araceli Vizoso Mnica Alonso Jaime Romero Jos‐Arturo García‐Vzquez Antonio Sousa‐Pedrares Antonio Sousa 《无机化学与普通化学杂志》2005,631(11):2107-2114
Tin(IV) complexes of the series of dianionic terdentate Schiff bases N‐[(2‐pyrroyl)methylidene]‐N′‐tosylbenzene‐1,2‐diamine, (H2L1), N‐[(2‐hydroxyphenyl)methylidene]‐N′‐tosylbenzene‐1,2‐diamine (H2L2) and some R substituted 2‐{[(2‐hydroxyphenyl)imino]methyl}phenols [R = H (H2L3), 4,6‐(OCH3)2 (H2L4), 3‐(OC2H5) (H2L5) and 3,5‐Br2 (H2L6)] have been synthesized. The compounds were obtained by the electrochemical oxidation of a tin anode in a cell containing an acetonitrile solution of the corresponding ligand. The complex [SnL12] was also obtained by reaction of SnCl2·2H2O and H2L1 in methanol in the presence of triethylamine. The crystal structure of the ligand [H2L6] and the complexes [SnL12] (1) , [SnL22] (2) , [SnL32] (3) and [SnL62] (6) were determined by X‐ray diffraction. In the complexes, the tin atom is in an octahedral environment coordinated by two dianionic terdentate ligands. Spectroscopic data for the complexes (IR, 1H and 119Sn NMR and mass spectra) are discussed and related to structural information. 相似文献
4.
J. Nicolas Roedel Roman Bobka Bernd Neumann Birgit Weber Peter Mayer Ingo‐Peter Lorenz Prof. Dr. 《无机化学与普通化学杂志》2007,633(8):1171-1177
The synthesis and characterization of mononuclear tetrakis‐aziridine nickel(II ) and copper(II ) complexes as well as of a dinuclear bis‐aziridine copper(II ) complex are described. The reactions of anhydrous MCl2 (M = NiII, CuII) with aziridine (= az = C2H4NH, C2H3MeNH, CH2CMe2NH) in CH2Cl2 at room temperature in a 1:5 and 1:2 molar ratio, respectively, afforded the tetrakis‐aziridine complexes [M(az)4Cl2] (M = Ni, Cu) or the dimeric bis‐aziridine complex [Cu(az)2Cl2]2. After purification, all of the complexes were fully characterized. The single crystal structure analysis revealed two different coordination modes. Whereas both nickel(II ) complexes can be classified as showing an elongated octahedral structure, copper(II ) complexes show either an elongated octahedral or a square pyramidal arrangement forming dimers with chlorido bridges in axial positions. Furthermore, the results of magnetic measurements of the nickel(II ) and copper(II ) compounds are presented. 相似文献
5.
A series of new 3‐(arylhydrazono)pentane‐2, 4‐diones ( 1 ‐ 6 ) synthesized from pentane‐2, 4‐dione and diazonium salts of respective anilines using the procedure of Japp‐Klingemann are described. Complexes with CuII and NiII salts are prepared ( 7 ‐ 10 , respectively). Spectroscopic properties of these compounds have been studied and X‐ray crystal structures of selected hydrazones ( 3 , 4 , 6 ) and of the hydrazone complexes ( 7 ‐ 10 ) are reported. The structures of the uncomplexed hydrazones feature an intramolecular N‐H···O interaction to yield a six‐membered H‐bond ring reflecting preference of the hydrazone tautomeric structure. All the complexes are mononuclear 2:1 (L:M) structures of six‐membered chelate type involving N2O2 binding sites that are quadratic arranged but differ in the entire coordination environment dependent on the metal and the ligand substitution including distorted octahedral and quadratic pyramidal coordination geometries in the CuII complexes 7 and 8 or nearly regular square planar coordination geometry in the NiII complexes 9 and 10 , respectively. In the crystal packings, strong and weak H‐bond interactions cause supramolecular network structures. 相似文献
6.
Two novel trinuclear nickel(II) complexes have been synthesized and characterized by X‐ray single crystal diffraction. Compound [Ni3(ashz)3(py)2(DMF)2]·(DMF)2 ( 1 ) crystallizes in the monoclinic, space group C2/c, with a = 22.114(2), b = 10.509(9), c = 19.485(2) Å, β = 114.443(1)°, Z = 4; compound [Ni3(acshz)3(py)2(DMF)2]·(DMF)2 ( 2 ) crystallizes in the monoclinic space group P21/n with a = 20.0620(2), b = 9.7017(6), c = 25.0533(2) Å, β = 97.0610(2)°, Z = 4, where ashz and acshz are deprotonated N‐acetylsalicylhydrazide (H3ashz) and N‐acetyl‐5‐chlorosalicylhydrazide (H3acshz), respectively. The crystal structure analysis of 1 and 2 showed that three Ni2+ ions in a linear arrangement are bridged by two ligands ((ashz)3? or (acshz)3?) to form a neutral nuclear with two four‐coordinate square‐planar nickel ions linked by a six‐coordinate octahedral central nickel ion. 相似文献
7.
Benigno Macías Isabel García María V. Villa Joaquín Borrs Alfonso Castieiras Francisca Sanz 《无机化学与普通化学杂志》2003,629(2):255-260
Sulfonamides obtained by reaction of 8‐aminoquinoline with benzenesulfonyl, toluene‐4‐sulfonyl and naphthalene‐2‐sulfonyl chlorides have been used to synthetize coordination compounds with ZnII with a ZnL2 composition. Determination of the crystal structures for the resulting complexes by X‐ray diffraction shows a distorted tetrahedral environment for the Zn2+ ions, sulfonamides acting as bidentate ligands through the nitrogen atoms from the sulfonamidate and quinoline groups. FT‐IR, 1H and 13C NMR and mass spectra of these compounds are also discussed. 相似文献
8.
Damir A. Safin Dr. Felix D. Sokolov Timur R. Gimadiev Vasiliy V. Brusko Maria G. Babashkina Dinara R. Chubukaeva Dmitriy B. Krivolapov Igor A. Litvinov 《无机化学与普通化学杂志》2008,634(5):967-971
Reaction of the potassium salt of N‐thiophosphorylthiourea tBuNHC(S)NHP(S)(OiPr)2 ( HL ) with ZnII, CdII, NiII and CoII in aqueous EtOH leads to complexes of common formula M(L‐S,S′)2 ( ML2 ). Complexes were investigated by IR, UV‐Vis, 1H and 31P{1H} NMR spectroscopy and microanalysis The structure of complex NiL2 was investigated by single crystal X‐ray diffraction analysis. The nickel(II) ion has a squre‐planar environment, S4, with two anionic ligands involving 1,5‐S,S′‐coordination mode. The ligands are bound in a trans configuration. 相似文献
9.
A. Castieiras M. C. F. Vidal J. Romero R. Sez A. Matilla J. Nicls J. M. Tercero 《无机化学与普通化学杂志》2001,627(7):1553-1559
New dinuclear complexes of the types [Ni2(L)(H2O)2] and [Ni2(L)(H2O)6] [H4L = N,N′‐bis(carboxymethyl) dithiooxamide (H4GLYDTO), N,N′‐bis(1‐carboxyethyl) dithiooxamide (H4ALADTO), N,N′‐bis(1‐carboxy‐2‐methylpropyl) dithiooxamide (H4VALDTO) and N,N′‐bis(1‐carboxy‐3‐methylbutyl) dithiooxamide (H4LEUDTO)] have been prepared and characterized by IR and electronic absorption spectroscopy, and the structure of [Ni2(ALADTO)(H2O)6] crystals has been determined by single crystal X‐ray analysis. This compound is composed of discrete dinuclear units in which two NiII atoms with NO4S kernels are linked by a single [ALADTO]4– group that coordinates through its carboxylato oxygen, amino nitrogen and thiolato sulphur atoms. In each dimer unit the two nickel(II) ions in distorted octahedral coordination are separated by 5.863(2) Å The temperature dependence of the magnetic susceptibility of the new compounds was measured over the range 2 to 300 K. In the complexes of [GLYDTO]4– and [ALADTO]4– the two Ni atoms are antiferromagnetically coupled, with J = –23.51(4) and –20.95(8) cm–1, respectively. By constrast, [Ni2(VALDTO)(H2O)2], [Ni2(VALDTO)(H2O)6] and [Ni2(LEUDTO)(H2O)2] remain paramagnetic down to 2 K, with magnetic moment values between 2.8 and 3.3 M.B. 相似文献
10.
Wilfredo Hernndez Evgenia Spodine Andres Vega Rainer Richter Jan Griebel Reinhard Kirmse Uwe Schrder Lothar Beyer 《无机化学与普通化学杂志》2004,630(10):1381-1386
The N‐acyl thiourea complexes bis[N,N‐diethyl‐N′‐(p‐nitrobenzoyl)‐thioureato]copper(II) ( 1a,1b ) and bis(N,N‐diphenyl‐N′‐benzoylthioureato)copper(II) ( 2a,2b ) crystallize in each case in two modifications. X‐ray structural analysis shows that 1a and 1b are cis‐trans isomers. This is very unusual for N‐acyl thioureato complexes because with exception of one platinum(II) complex up to now only cis complexes have been found. In contrast X‐ray structural analysis of both forms 2a and 2b of the other complex shows no cis‐trans pair. Both modifications are cis complexes. In solution both isomers of the copper(II) complexes are observable by EPR spectroscopy. 相似文献
11.
Ellery R. Garbelini Manfredo Hrner Mariana Boneberger Behm David J. Evans Fbio S. Nunes 《无机化学与普通化学杂志》2008,634(10):1801-1806
The pyridine‐2‐carbaldehyde semicarbazone ligand (HL) reacts with iron(II) and copper(II) perchlorates in boiling ethanol to yield red‐violet [FeII(HL)2](ClO4)2·H2O ( 1 ) and light‐green crystals [CuII(HL)2](ClO4)2·H2O ( 2 ). The crystals are triclinic with the metal ions in an octahedral environment, coordinated to two nitrogen and one oxygen‐donor atom from HL. Electronic, magnetic and electrochemical properties are presented as well. 相似文献
12.
Planar nickel(II) complexes involving N‐(2‐Hydroxyethyl)‐N‐methyldithiocarbamate, such as [NiX(nmedtc)(PPh3)] (X = Cl, NCS; PPh3 = triphenylphosphine), and [Ni(nmedtc)(P‐P)]ClO4(P‐P = 1,1‐bis(diphenylphosphino)methane(dppm); 1,3‐bis(diphenylphosphino)propane (1,3‐dppp); 1,4‐bis(diphenylphosphino)butane(1,4‐dppb) have been synthesized. The complexes have been characterized by elemental analyses, IR and electronic spectroscopies. The increased νC–N value in all the complexes is due to the mesomeric drift of electrons from the dithiocarbamate ligands to the metal atom. Single crystal X‐ray structure of [Ni(nmedtc)(1,3‐dppp)]ClO4·H2O is reported. In the present 1,3‐dppp chelate, the P–Ni–P angle is higher than that found in 1,2‐bis(diphenylphosphino)ethane‐nickel chelates and lower than 1,4‐bis(diphenylphosphino)butane‐nickel chelates, as a result of presence of the flexible propyl back bone connecting the two phosphorus atoms of the complex. 相似文献
13.
To explore the coordination abilities of nitronyl nitroxide ligands, two ligands substituted with quinoxaline ( L1 ) and 2‐phenyl‐1, 2, 3‐triazole ( L2 ) and their NiII and ZnII complexes: Ni( L1 )(hfac)2 ( 1 ), Ni( L2 )(hfac)2 ( 2 ), and Zn( L2 )(hfac)2 ( 3 ) (hfac = hexafluoroacetylacetonate), were synthesized and characterized. X‐ray single‐crystal diffraction analysis shows that compound 1 has a mononuclear structure, which is further linked into a three‐dimensional (3D) supramolecular network by C–H ··· F hydrogen‐bonding, C–H ··· π, and π ··· π stacking interactions. Complexes 2 and 3 have similar mononuclear structures, which are further linked into one‐dimensional (1D) supramolecular chains by various intermolecular weak interactions, such as C–H ··· F hydrogen‐bonding, and π ··· π stacking interactions. The results indicate that the steric bulk of L1 and L2 and the existence of hexafluoroacetylacetonate (hfac) play important roles in controlling the formation of the final frameworks of complexes 1 – 3 . Moreover, the luminescent properties of the ligands and their complexes were investigated in detail. 相似文献
14.
Karen A. Ketcham Isabel Garcia Elena Bermejo John K. Swearingen Alfonso Castieiras Douglas X. West 《无机化学与普通化学杂志》2002,628(2):409-415
Reduction of 2‐cyanopyridine by sodium in the presence of 3‐hexamethyleneiminylthiosemicarbazide produces 2‐pyridineformamide 3‐hexamethyleneiminylthiosemicarbazone, HAmhexim. Complexes with nickel(II), copper(II) and palladium(II) have been prepared and the following complexes structurally characterized: [Ni(Amhexim)OAc], [{Cu(Amhexim)}2C4H4O4]·2DMSO·H2O, [Cu(HAmhexim)Cl2] and [Pd(Amhexim)Cl]. Coordination is via the pyridyl nitrogen, imine nitrogen and thiolato or thione sulfur atom when coordinating as the anionic or neutral ligand, respectively. [{Cu(Amhexim)}2C4H4O4] is a binuclear complex with the two copper(II) ions bridged by the succinato group in [Cu‐(HAmhexim)Cl2] the Cu atom is 5‐coordinate and close to a square pyramid structure and in [Ni(Amhexim)OAc] and [Pd(Amhexim)Cl] the metal atoms are planar, 4‐coordinate. 相似文献
15.
Two novel five‐coordinate zinc(II) complexes with the tripod ligand tris(N‐methylbenzimidazol‐2‐ylmethyl)amine (Mentb) and two different α,β‐unsaturated carboxylates, with the composition [Zn(Mentb)(acrylate)] (ClO4)·DMF·1.5CH3OH ( 1 ) and [Zn(Mentb)(cinnamate)](ClO4)·2DMF·0.5CH3OH ( 2 ), were synthesized and characterized by means of elemental analyses, electrical conductivity measurements, IR, UV, and 1H NMR spectra. The crystal structure of two complexes have been determined by a single‐crystal X‐ray diffraction method, and show that the ZnII atom is bonded to a Mentb ligand and a α,β‐unsaturated carboxylate molecule through four N atoms and one O atom, resulting in a distorted trigonal‐bipyramidal coordination [τ( 1 ) = 0.853, τ( 2 ) = 0.855], with approximate C3 symmetry. 相似文献
16.
Antonio Sousa-Pedrares Nuria CamiñaJaime Romero Maria L. DuránJosé A. García-Vázquez Antonio Sousa 《Polyhedron》2008
A new hydrazonic Schiff base ligand, 2-pyridinecarbaldehyde-(2′-aminosulfonylbenzoyl)hydrazone (HL), has been prepared and characterized, and its coordinative properties were studied. [ML2] complexes, M = Co, Ni, Cu, Zn or Cd have been synthesised by electrochemical oxidation of the anodic metal in a cell containing an acetonitrile solution of the ligand. The compounds obtained have been characterized by microanalysis, IR, NMR and UV–Vis spectroscopy, mass spectrometry and also by X-ray diffraction. The structural studies show that the metal is in a distorted octahedral environment with the monoanionic ligand acting as a meridional tridentate (N,N,O) chelate system. 相似文献
17.
New lead(II)‐saccharin complexes, [Pb(sac)2(pym)] (1) and [Pb(sac)2(pydm)] (2) (sac = saccharinate anion; pym = 2‐pyridylmethanol; pydm = pyridine‐2, 6‐dimethanol) were synthesized and characterized by IR spectroscopy and single crystal X‐ray diffractometry. Complex 1 crystallizes in the monoclinic P21/c space group with Z = 4, while the crystals of complex 2 are extremely X‐ray sensitive and decompose by the X‐ray beam within one day. Pym and pydm act as bi‐ and tridentate ligands, respectively. Most important feature of the complexes is non‐equivalent coordination of the sac ligands to the lead(II) atom. In the complex 1 , the sac ligands coordinate to the lead(II) ion in two distinct manners. One sac ligand behaves as a bridge between the lead(II) atoms through its N and carbonyl O atoms, whereas the other sac ligand acts as a bidentate chelating ligand through its N and carbonyl O atoms which is bicoordinating and also bridges the metal atoms to achieve the seven‐coordination. The structure is built up of three‐dimensional chains formed by the bridging of the PbN3O2 units and also held intermolecular hydrogen bonds. The IR spectra of the complexes were discussed in detail. 相似文献
18.
Damir A. Safin Dr. Felix D. Sokolov Sergey V. Baranov Łukasz Szyrwiel Maria G. Babashkina Elmira R. Shakirova F. Ekkehardt Hahn Henryk Kozlowski 《无机化学与普通化学杂志》2008,634(5):835-838
Reaction of the potassium salt of N‐diisopropoxyphosphinyl‐p‐bromothiobenzamide p‐BrC6H4C(S)NHP(O)(OiPr)2 ( HL ) with Ni(NO3)2 in aqueous EtOH leads to complex of formula [Ni(HL‐O)2(L‐O,S)2] ( 1 ). The structure of 1 was investigated by single crystal X‐ray diffraction analysis, IR, 1H and 31P{1H} NMR spectroscopy, MALDI and microanalysis. The nickel(II) ion in 1 has a tetragonal‐bipyramidal environment, (Oax)2(Oeq)2(Seq)2, with two neutral ligand molecules coordinated in axial positions through the oxygen atoms of the P=O groups. The equatorial plane of bipyramide is formed by two anionic ligands involving 1,5‐O,S‐coordination mode. The chelating ligands are bound in trans configuration. 相似文献
19.
Synthesis,Characterization, and DNA Binding Studies of a Nickel(II) Complex Containing the 1,3‐Bis(1‐propylbenzimidazol‐2‐yl)‐2‐oxapropane 下载免费PDF全文
A complex of formula [Ni(pobb)2](pic)2, (pobb = 1,3‐bis(1‐propylbenzimidazol‐2‐yl)‐2‐oxapropane, pic = 2,4,6‐trinitrophenol), has been synthesized and structurally characterized by physico‐chemical and spectroscopic methods. The crystals crystallize in the monoclinic system, space group C2/c, a = 25.766(11) Å, b = 14.943(7) Å, c = 19.543(14) Å, α = 90°, β = 129.722(4)°, γ = 90°, Z = 4. The coordination environment around nickel(II) atom can be described as a distorted octahedral geometry. The interactions of the ligand pobb and the nickel (II) complex with calf thymus DNA (CT‐DNA) are investigated by using electronic absorption titration, ethidium bromide‐DNA displacement experiments and viscosity measurements. The experimental evidence indicated the compounds interact with calf thymus DNA through intercalation. 相似文献
20.
The reaction of palladium(II) bromide or palladium(II) iodide with the respective gallium(III) halogenide in the presence of aromatic solvents leads to the formation of palladium(II) tetrabromo— and tetraiodogallate. The compounds are isostructural {monoclinic, C2/m, Pd[GaBr4]2: a = 1267(2), b = 808(1), c = 722(1) pm, β = 94.5(1)°; Pd[GaI4]2: a = 1363(1), b = 849.9(4), c = 756.6(7) pm, β = 95.38(3)°}. The structures contain mononuclear complexes Pd[GaX4]2, where X— = Br— ( 1 ), I— ( 2 ). The crystal structures of 1 and 2 were determined by single‐crystal X‐ray diffraction. Crystals of both compounds turned out to be similarly twinned. 相似文献