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1.
The conditions of synthesis of a new binary complex salt [Co(Cpl) 6][Hg 2I 6] (Cpl is ε-caprolactam ε-C 6H 11NO) have been developed, and its structure has been characterized. The salt crystallizes in triclinic system, space group \(P\bar 1\), a = 10.1078(4) Å, b = 12.2680(5) Å, c = 13.0782(5) Å, α = 62.872(2)°, β = 72.394(2)°, γ = 76.834(2)°, V = 1367.98(9) Å 3, Z = 1, and ρ calc = 2.297 g/cm 3. The structure is insular and consists of isolated ions. 相似文献
2.
In this study, a mononuclear CuL complex was prepared by the use of bis-N,N′-(salicylidene)-1, 3-propanediamine (LH2) and Cu2+ ion. NiCl2 and NiBr2 salt were treated with this complex in dioxanewater medium and two new complexes [(CuL)2NiCl2(H2O)2] and [(CuL)2NiBr2(H2O)2)] with Cu(II)–Ni(II)–Cu(II) nucleus structure were obtained. In addition to this bis-N,N′-(2-hydroxybenzyl)-1,3-diaminopropane (LHH2) was prepared by the reduction of LH2 with NaBH4 in MeOH medium. The treatment of this reduced complex with Cu2+ ion resulted a complex [(CuLH)2CuCl2] with a structure of Cu(II)–Cu(II)–Cu(II). The complexes prepared were characterized by the use of elemental analysis, IR spectroscopy, thermogravimetric and X-ray diffraction methods. The crystal structures of [(CuL)2NiBr2(H2O)2] (СIF file CCDC 1448402) and [(CuLH)2CuCl2] (СIF file CCDC 1448401) complexes were elucidated. It was found that halogen ions are coordinated to terminal Cu2+ ions which are in a distorted square pyramid coordination sphere. It was determined that the central Cu(II), which joins terminal square pyramidal Cu(II), was coordinated only by the phenolic oxygens of the ligand while the central Ni(II) was coordinated by two phenolic oxygens of the organic ligand and two water molecules. These complexes were investigated by XPS and it was found that the terminal and central Cu2+ ions were different in Cu(II)–Cu(II)–Cu(II) complex. Also, the thermal degradation of the CuLH complex unit was observed to exothermic in contrast to the expectations. 相似文献
3.
This paper describes a procedure for the synthesis of two new volatile complexes, Pd(L 1) 2 and Pd(L 2) 2, from sterically hindered methoxy-β-iminoketones, where HL 1 = C(CH 3) 2(OCH 3)-C(NH)-CH 2-C(O)-C(CH 3) 3; HL 2 = C(CH 3) 2(OCH 3)-C(NH)-CH 2-C(O)-CH(CH 3) 2. Element analysis and IR spectral data are given. The results of full X-ray crystal structure analysis of the complexes are reported. The compounds have molecular structures; the crystals of the complexes have different symmetry groups and unit cell dimensions. The Pd(L 1) 2 complex molecule has a nonplanar structure; the Pd(L 2) 2 complex has a cis-structure. The geometrical characteristics obtained for the coordination units are as follows: the Pd-O and Pd-N bond lengths and N-Pd-O chelate angles were estimated at 1.960 Å, 93.7° for Pd(L 1) 2, and 1.984 Å, 1.976 Å, 92.4° for Pd(L 2) 2. 相似文献
5.
The paramagnetic complex Cu(HL)Cl 2( I) (μ eff = 1.88 μ B) and the diamagnetic complex Pd(HL)Cl 2( II) with chiral α-thiooxime, a derivative of natural terpenoid (?)-α-pinene (HL), were synthesized. The crystal structures of these complexes were determined from single-crystal X-ray diffraction data (X8 APEX diffractometer, Mo K α radiation, 2975 F hkl , R = 0.0258 for I and 3270 F hkl , R = 0.0222 for II). The crystals of complex I are monoclinic, a = 9.3376(3) Å, b = 6.8619(2) Å, c = 14.6540(5) Å, β = 97.814(1)°, V = 930.22(5) Å 3, Z = 2, ρ calc = 1.513 g/cm 3, space group P2 1. The crystals of complex II are orthorhombic, a = 7.0084(6) Å, b = 9.2113(9) Å, c = 29.081(3) Å, V = 1877.4(3) Å 3, Z = 4, ρ calc = 1.651 g/cm 3, space group P2 12 12 1. The structures are composed of mononuclear molecules. The coordination cores MNSCl 2 (M = Cu, Pd) are tetrahedrally distorted squares. According to NMR data, complex II has a similar structure in a CDCl 3 solution. The intermolecular contacts in structure I generate supramolecular polymeric ribbons lying parallel to axis b. No short intermolecular contacts are present in complex II. 相似文献
6.
Introduction The complexes of amino acid Schiff base have re-ceived considerable attention because of the interests in the biogical field.1-4 Taurine is a special amino acid in human beings. Recently, the complexes of taurine con-densation salicylaldelyde Schiff base have been re-ported,3-7 but the complexes of taurine condensation derived salicylaldelyde Schiff base have not been re-ported yet. In order to examine its anticancer and antibiosis ac-tivity of the complexes of taurine condensa… 相似文献
7.
Synthesis and characterization, including data on thermal decomposition, are reported for the complexes of S,S'-methylenebis(cysteine) (djenkolic acid) with copper(II), zinc(II) and cadmium(II): CuC 7H 12N 2O 4S 2 [I]; ZnC 7H 12N 2O 4S 2 [II] and CdC 7H 12N 2O 4S 2 [III]. X-ray diffraction showed that the compounds are isostructural and belong to a monoclinic system. According to IR spectra, COO, NH 2 groups and bridging sulfur atoms are the main coordination sites. 相似文献
9.
Paramagnetic complexes Cu(HL 1)Cl 2 ( I), Cu(HL 2)Cl 2 · 2H 2O ( II), and Cu(HL 1)Br 2 ( III) are synthesized by the reaction of copper(II) halides with the optically active -alkylamino oximes HL 1 and HL 2 of caryophyllene type. Crystal and molecular structures of complex I are determined. The crystals are orthorhombic: a = 9.038(2) Å, b = 11.990(2) Å, c = 11.990(2) Å, V = 2004.8(7) Å 3, space group P2 12 12 1, Z = 4, (calcd) = 1.812 g/cm 3, R
1 = 0.0632. In a mononuclear complex I, the coordination polyhedron of CuCl 2N 2 is a distorted square. The structures of complexes II and III are suggested on the basis of EPR, IR and Raman spectroscopy data. 相似文献
10.
A new binuclear copper(II) complex, [Cu 2(μ 1,1-N 3) 2(PP) 2)] ? 2ClO 4 (PP = 2,6-dipyrazol-1-yl-pyridine), was synthesized with double azide as asymmetric end-on bridge ligand and 2,6-dipyrazol-1-yl-pyridine as the terminal ligand. The crystal structure was determined by X-ray crystallography. Cu(II) is located in a distorted square pyramidal geometry, and azide bridges the equatorial-axial linking two Cu(II) atoms with a separation of 3.3595(11) Å. The fitting for the data of the variable-temperature (2–300 K) magnetic susceptibilities by using the Curie–Weiss law gives the Weiss temperature θ = ?7.830 K, indicating a very weak anti-ferromagnetic interaction between the bridging Cu(II) complexes. 相似文献
11.
The complexes cis-bis( N-furoyl- N′, N′-diethylthioureato- k 2O,S)nickel(II) and cis-bis( N-furoyl- N′, N′-diethylthioureato- k 2O,S)copper(II) were prepared by the reaction of metal acetate with the corresponding acylthiourea derivative. The complexes were characterized by IR, 1H-NMR, 13C-NMR, and single-crystal X-ray diffraction. Both complexes show two furoylthiourea ligands bonded to metal to form a four-coordinate complex with square-planar geometry. The antifungal activity of the prepared complexes was studied against the phytopathogenic fungi Botrytis cinerea and Colletotrichum gloeosporioides, responsible for important plant diseases. 相似文献
12.
Dimeric Cu(II) complexes of thiosemicarbaznes derived from α-oximinoacetoacetanilide (OAATS), α-oximinoacetoacet- o-toluidide (OAOTTS), α-oximinoacetoacet- p-toluidide (OAPTTS), α-oximinoacetoacet- o-anisidide (OAOATS), α-oximinoacetoacet- p-anisidide (OAPATS), α-oximinoacetoacet- o-chloroanilde (OAOCATS), α-oximinoacetoacet- m-chloroanilide (OAMCATS), α-oximinoacetoacet- p-chloroanilide (OAPCATS) and α-oximinoacetoacet- m-(2,4)xylidide (OAMXTS) having general formula [CuL] 2 are characterised by elemental analyses, IR, ESR and Reflectance spectra and magnetic susceptibilities. From the IR spectra of the complexes it is concluded that thiosemicarbazones coordinate through oxygen of oximino group and 1-nitrogen and sulphur of of thiosemicarbazide moiety, acting as tridentate ligands. The dimeric nature of the complexes is revealed by lowering in magnetic moments at room temperature ( μeff = 1.25–1.51 B.M.). The reflectance and ESR spectra have also been discussed to understand the nature of bonding in the complexes. 相似文献
13.
Based on the building blocks, trans-dicyanide Fe(III) precursor and chiral amine Cu(II) compound, the chiral cyanide-bridged heterometallic Fe(III)–Cu(II) complex with the formula {[Cu(R/R-Chxn) 2Fe(bpmb)·(CN) 2][Fe(bpmb)(CN) 2]}·CH 3OH·H 2O ( 1) [bpmb 2– = 1,2-bis(pyridine-2-carboxamido)-4-methylbenzenate, R,R-Chxn = R,R-1,2-diaminocyclohexane] has been synthesized and characterized by elemental analysis, IR spectra and X-ray analysis. The latter revealed that the complex contained the cyanide-bridged cationic binuclear entity and free anionic cyanide building block. The complex demonstrated weak ferromagnetic coupling between neighboring Fe(III) and Cu(II) ions via the bridging cyanide group. 相似文献
14.
The complex compound [CdL 1.25(CH 3CO 2) 2(H 2O)], where L = NH 2-C 6H 4-C(CH 3) 2-C 6H 4-C(CH 3) 2-C 6H 4-NH 2 was synthesized and its crystal structure was determined. The crystals are triclinic, space group P $ \bar 1 $ , a = 10.160(1) ?, b = 17.442(1) ?, c = 20.232(1) ?, ?? = 67.93(1)°, ?? = 87.22(1)°, ?? = 77.65(1)°, V = 3340.2(4) ? 3, ?? calc = 1.392 g/cm 3, Z = 4. The structure contains two crystallographically non-equivalent Cd 2+ ions, each coordinating two nitrogen atoms of two ligands L, four oxygen atoms of two bidentate acetate groups, and one water molecule. The coordination polyhedron of Cd 2+ ions is anirregular sevenvertex polyhedron. The interaction of cadmium with ligands L gives rise to centrosymmetric tetranuclear complexes [Cd 4L 5]. 相似文献
15.
A novel trinuclear complex, [Co(NiL) 2(H 2O) 2](ClO 4) 2 · 2C 2H 5OH, was prepared by self-assembly using [NiL] as a new complex ligand; L is the dianion of dimethyl 5,6,7,8,15,16-hexahydro-6,7-dioxodibenzo[1,4,8,11]tetraazacyclotetradecine-13,18-dicarboxylate. The structure of the trinuclear complex was determined by X-ray crystallography. The Co II ion is at the center of the trinuclear complex cation and occupies a distorted octahedral O 6 environment, approximating to O
h with a 4
T
1g
ground state for Co II that has an unquenched spin–orbit coupling reflected in the magnetic properties. Two Ni II ions reside in completely same and slightly distorted square-planar N 4 coordination geometries. Co II and each Ni II are bridged by an oxamido group from one of the two macrocyclic ligands (L). O—H...O and ... interactions link the trinuclear fragments, perchlorate ions and C 2H 5OH molecules to form a three-dimensional supramolecular architecture. 相似文献
16.
A new cyanide-bridged heterobimetallic Fe(III)–Mn(II) complex {[MnL][FebpdBrb]} [FebpdBrb] n· 2 nH 2O has been synthesized by using pyridinecarboxamide trans-dicyanideiron as the building block. The X-ray diffraction analysis has revealed the one-dimensional infinite structure of the complex consisting of the alternating [Mn(L)] 2+ and [Fe(bpdBrb)(CN) 2] – units forming a cyanide-bridged cationic polymeric chain, with [Fe(bpdBrb)(CN) 2] – as the free anions. The antiferromagnetic coupling between the neighboring Fe(III) and Mn(II) ions through the bridging cyanide group has been revealed. The magnetic coupling constant has been determined as of J =–3.17 cm –1. 相似文献
18.
The optically active complexes [Zn(L) 2Cl 2] ( I) and [Zn(L 1) 2Cl 2] ( II) (L and L 1 are thiosemicar-bazones of (+)-camphor and (?)-carvone, respectively) were obtained. The crystal structures of L and complex I were determined by X-ray diffraction. The structure of L consists of hydrogen-bonded molecules united into chains. The crystal structure of complex I is built from mononuclear molecules. The coordination polyhedron of the Zn atom is a distorted tetrahedron Cl 2S 2. The molecule L functions as a monodentate ligand. According to data from IR spectroscopy, complex II is structurally similar to complex I. 相似文献
19.
Summary. New β-diketone phenylhydrazones prepared by condensation of substituted 3-arylidene-2,4-pentanediones with phenylhydrazine,
have been characterized by their elemental analyses, IR, 1H NMR, and mass spectra. Some complexes of these Schiff bases with Co(II), Ni(II), and Cu(II) ions have been synthesized; in addition to the above methods, their structures were
studied by magnetic susceptibility and thermogravimetry measurements.
Received January 26, 2000. Accepted (revised) April 14, 2000 相似文献
20.
Coordination compounds Cu 2(H 2L 1)Cl 4 ( I), Pd 2(H 2L 1)Cl 4 ( II), Cu 2(H 2L 2)Cl 4 ( III), and Pd 2(H 2L 2) Cl 4 ( IV) with chiral bis-α-sulfanyloximes, the derivatives of the monoterpenoid (−)-α-pinene, were obtained. The complexes I and III are paramagnetic (μ eff = 2.45 and 2.67 μ B, respectively), II and IV are diamagnetic. According to IR spectroscopy, in the compounds I–IV the nearest environment of Cu and Pd atoms includes
N, S, and Cl atoms. The values of μ eff and parameters of ESR spectra of the solid phase and solutions of I and III show a binuclear structure of the Cu(II) complexes. Parameters of the 1H and 13C NMR spectra of compounds II and IV indicate the formation of binuclear Pd(II) complexes of C
2 symmetry and the closure of fivemembered chelate rings PdNSC 2. The PdCl 2 fragments are in transoid position. H 2L 1 and H 2L 2 are tetradentate bridging chelating ligands. 相似文献
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