共查询到20条相似文献,搜索用时 0 毫秒
1.
S. V. Kochnev E. V. Peresypkina A. V. Virovets T. G. Cherkasova 《Russian Journal of Inorganic Chemistry》2012,57(8):1067-1072
The possibility of ?-caprolactam (CPL) to coordinate to manganese(II), cobalt(II), and nickel(II) rhodanides has been investigated. New complexes trans-[M(CPL)4(NCS)2], where M = Mn (I), Co (II), and Ni (III), have been synthesized. The complexes have been studied by chemical analysis and IR spectroscopy. According to X-ray diffraction, complexes are isostructural to each other and crystallize in monoclinic space group P21/c, Z = 2. For I: a = 6.9457(2) ?, b = 17.7751(6) 0A, c = 12.8999(4) 0A, ?? = 104.2670(10)°, V = 1543.51(8) ?3, ??calc = 1.342 g/cm3, R 1 = 0.0426. For II: a = 6.8925(2) ?, b = 17.8189(8) ?, c = 12.7278(6) ?, ?? = 104.421(2)°, V = 1513.93(11) ?3, ??calc = 1.377 g/cm3, R 1 = 0.0280. For III: a = 6.7804(2) ?, b = 18.4631(4) ?, c = 12.4841(3) ?, ?? = 105.2950(10)°, V = 1507.49(7) ?3, ??calc = 1.382 g/cm3, R 1 = 0.0273. Structures I?CIII are molecular; the metal atom in each of them coordinates four CPL molecules and two NCS groups via oxygen and nitrogen atoms, respectively. 相似文献
2.
P. N. Bourosh O. A. Bologa V. Lozan O. Ciobanica I. Bulhac A. V. Vologzhanina Yu. A. Simonov 《Russian Journal of Coordination Chemistry》2010,36(3):204-212
A series of new coordination compounds of cobalt(III) trans-dioximates with pyrazine [CoCl(DH)2Pz] · H2O (I), [CoBr(DH)2Pz] · H2O (II), [Co(DH)2Pz2]NO3 · H2O (III), [Co(DH)2Pz2][BF4] (IV), [Co(MgH)2Pz2][BF4] (V), and [Co(NioxH)2Pz2][BF4] (VI), where DH, MgH, and NioxH are dimethylglyoxime, methylglyoxime, and 1,2-cyclohexanedionedioxime monoanions, respectively,
Pz is a pyrazine molecule were synthesized. The structures of compounds I, II, and VI were determined by X-ray diffraction. The Co(III) environment in these compounds is octahedral and the pseudomacrocyclic
(DioxH−)2 fragment occurs in the equatorial plane. This fragment is stabilized by O-H…O hydrogen bonds. The neutral Pz ligand is monodentate
in all three compounds. 相似文献
3.
Agnieszka Czylkowska Danuta Czakis-Sulikowska Rafał Kruszyński Mirosława Markiewicz 《Structural chemistry》2010,21(2):415-423
A novel mixed-ligand complexes of Er(III), Yb(III) and Lu(III) with title ligands were prepared and characterized by chemical
and elemental analysis and IR spectroscopy, conductivity (in methanol, dimethyloformamide and dimethylsulphoxide). The thermal
properties of complexes in the solid state were studied. The mode of metal–ligand coordination was discussed. The title compounds
are isomorphic and isostructural in solid state. All atoms in studied compounds lie in general positions but occurrence of
inversion on the midpoint of the bond linking two pyridine rings leads to existence in asymmetric unit one complex molecule
and half of outer coordination sphere 4-bpy molecule. All chelating carboxylate groups are symmetrically bonded to the metal
cations. The molecules of studied compounds are connected to the three dimensional network via O–H···O and O–H···N intermolecular
hydrogen bonds. In the structures also exist C–H···O, C–H···Cl weak hydrogen bonds and π····π stacking interactions. 相似文献
4.
Two copper (II) α-Methacrylate complexes with benzimidazole, Cu[CH2 = C(CH3)-COO]2 (C3H6N2)2(1) and Cu2[CH2 = C(CH1)-COO]2(C3H6N2)2(2), have been prepared and characterized by elemental analyses, IR and electronic reflectance spectroscopies. ’The single
crystal X-ray diffraction study of the two complexes shows that complex 1 has a square planar configuration, while complex
2 has a binuclear cage structure. The crystal structural analyses show that both complexes 1 and 2 are monoclinic. with space
group p21/c,a = 0.924 16(8) nm,b = 1.233 02(13) nm,c = 0.989 1(3) nm,β = 91.912 (13),D
c = 1.386 g/cm3,Z=2,R = 0.033 9 for the former; anda = 0.905 7(2) nm,b = 2.252 1(5) nm,c = 1.623 5(4) nm,β = 90.11 (2),D
c = 1.411 g/cm3,Z = 4,R = 0.056 8, Cu-Cu = 0.266 21 nm for tin latter. Different structural types of complexes 1 and 2 were produced simultaneously
in the reaction of copper (II) α-methacrylate with benzimidazole in methanol solution. ’The forming mechanism of the complexes
has been summanzed.
Project supported by the national natural Science Foundation of China (Grant No. 29831010) and the Foundation of the State
Key Laboratory of Coordination Chemistry of Nanjing university. 相似文献
5.
This paper describes a procedure for the synthesis of two new volatile complexes, Pd(L1)2 and Pd(L2)2, from sterically hindered methoxy-β-iminoketones, where HL1 = C(CH3)2(OCH3)-C(NH)-CH2-C(O)-C(CH3)3; HL2 = C(CH3)2(OCH3)-C(NH)-CH2-C(O)-CH(CH3)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(L1)2 complex molecule has a nonplanar structure; the Pd(L2)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(L1)2, and 1.984 Å, 1.976 Å, 92.4° for Pd(L2)2. 相似文献
6.
Phthalocyanines (Pcs) have been widely used as dyes and pigments, photoelectric materials and catalysts. They also bring general attention for potential applications, for example, in solar batteries and fuel cell, charge battery, electrochromic display devices, liquid crystal, sensors and molecular devices. The Pc抯 properties, such as spectroscopic, electronic, and magnetic properties, thermostabilities, and catalytic activities, may be adjusted by modifying the molecular structure. Therefor… 相似文献
7.
8.
A. V. Tikhomirova I. Yu. Bagryanskaya N. V. Pervukhina T. G. Cherkasova 《Russian Journal of Inorganic Chemistry》2017,62(2):187-190
The conditions of synthesis of a new binary complex salt [Co(Cpl)6][Hg2I6] (Cpl is ε-caprolactam ε-C6H11NO) 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) Å3, Z = 1, and ρcalc = 2.297 g/cm3. The structure is insular and consists of isolated ions. 相似文献
9.
《Journal of Coordination Chemistry》2012,65(16):2558-2562
A carboxylate-bridged Co(II)–Gd(III) complex, [(bipy)CoL3Gd(NO3)L3Co(bipy)] (HL =?α-methylacrylic acid, bipy =?2,2′-bipyridine), was prepared and characterized. Single crystal X-ray analysis reveals that the complex assumes a carboxylate-bridged CoGdCo unit. Magnetic measurements showed χm T decreases when the temperature is lowered. 相似文献
10.
Crystal structure of pyridine and methanol axially coordinated 1,4,8,11,15,18,22,25-octabutyloxyphthalocyaninatocobalt(II)(viz.
α-octabutyloxyphthalocyaninatocobalt) [(n-BuO)8Pc]. Co(Py)(MeOH) (1) was determined by X-ray diffraction methods. Crystal data: monoclinic, space group P21/n, Z = 4, a = 1.06482(4), b = 3.5487(2), c = 1.79428(9) nm, β=103.246(2)°, V = 6.5792(5) nm3, μ = 0.325 mm-1. The result shows that the ring skeleton of 1 maintains planar conformation, which is similar to that of unsubstituted phthalocyanine
but is remarkably different from the saddle shape conformation of 1,4,8,11,15,18,22,25-octabutyloxyphthalocyaninatocopper
(II) [(n-BuO)8Pc]Cu(2), which has no axial coordination. In the structure of 1, the substituents butyloxy groups of 1 somewhat deviate from
the ring plane, while pyridine and methanol are coordinated to the center atom Co from opposite sides of the ring plane. In
addition, all molecules are stacked along axis a to form one-dimensional molecule chain, the neighboring molecules in the
chain overlap to some extent with a benzene ring and a distance of 0.3565 nm. 相似文献
11.
《Journal of Coordination Chemistry》2012,65(16):2890-2898
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.
Synthesis and magnetic characterization of Ln(III)–Co(II) complexes with 1,10-phenanthroline ligands
《Journal of Coordination Chemistry》2012,65(5):808-816
Four heteronuclear complexes, [Ln2Co2L10(H2O)(phen)2] · n(H2O) (Ln = La 1, n = 2; Ln = Nd 2, Sm 3, Gd 4, n = 0; HL = α-methylacrylic acid, phen = 1,10-phenanthroline), have been synthesized and characterized by elemental analysis, IR and X-ray diffraction. The complexes with a discrete Co–Ln–Ln–Co tetranuclear molecule are isomorphous in the triclinic space group P 1 and Z = 1, in which all metal ions are bridged by bidentate α-methylacrylato groups. Magnetic measurements of 1, 2 and 3 show antiferromagnetic exchange interaction between paramagnetic centers. 相似文献
13.
《Journal of Coordination Chemistry》2012,65(5):692-704
Two new complexes {[Tb(2-IBA)3 · 2,2′-bipy]2 · C2H5OH} (1) and [Tb(2-ClBA)3 · 2,2′-bipy]2 (2) (2-IBA = 2-iodobenzoate; 2-ClBA = 2-chlorobenzoate; 2,2′-bipy = 2,2′-bipyridine) were prepared and their crystal structures determined by X-ray diffraction. Complex 1 is composed of two types of binuclear molecules, [Tb(2-IBA)3 · 2,2′-bipy]2 (a) and [Tb(2-IBA)3 · 2,2′-bipy]2 (b), and an uncoordinated ethanol molecule. In molecule (a), two Tb3+ ions are linked by four 2-IBA groups, all bidentate-bridging. In molecule (b), two Tb3+ ions are held together by four 2-IBA groups in two coordination modes, bidentate-bridging and chelating-bridging. In the two molecules, each Tb3+ ion is further bonded to one chelating 2-IBA group and one chelating 2,2′-bipy molecule, resulting in coordination numbers of eight for (a) and nine for (b). The structural characteristics of 2 are similar to that of molecule (b) in 1. The two complexes, 1 and 2, both emit strong green fluorescence under ultraviolet light with the 5D4 → 7F j (j = 6–3) emission of Tb3+ ion observed. 相似文献
14.
《Journal of Coordination Chemistry》2012,65(20):3335-3353
Two new Cu(II)–hydrazone complexes, [Cu(L)(Hbpe)ClO4]·ClO4·[Cu(L)Cl] (1) and [Cu(HL)2]·1.5ClO4·0.5OH (2) (where HL?=?(E)-N′-(1-(pyridine-2-yl)ethylidene)benzohydrazide and bpe = trans-1-(2-pyridyl)-2-(4-pyridyl)ethylene), have been synthesized and characterized by physicochemical methods. The structures of the complexes have been established by single-crystal X-ray diffraction direct methods, which reveal that the metal ions have distorted square-pyramidal and square-planar geometries in 1, and a distorted octahedral geometry in 2. DNA binding of HL, 1, and 2, performed by UV–vis titration in tris-buffer medium, yielded binding constants, which are 9.5 × 103, 1.88 × 104, and 4.66 × 104 M?1, respectively. Viscosity measurements suggest a surface or groove-binding mode of interaction between CT-DNA with HL, 1, and 2. 相似文献
15.
E. B. Coropceanu A. P. Rija V. I. Lozan O. A. Bologa A. A. Boldisor I. I. Bulhac V. Ch. Kravtsov P. N. Bourosh 《Russian Journal of Coordination Chemistry》2012,38(8):545-551
The complexes [Co(DioxH)2L2][SbF6] · nH2O, where DioxH is dimethylglyoxime monoanion (DioxH?) or 1,2-cyclohexanedione dioxime (NioxH?), L is aniline (An) or triphenylphosphine (PPh3), were isolated from the CoX2 · nH2O-NaSbF6-DioxH2-L system (X = F or CH3COO) in aqueous methanol. The complexes were studied by UV, IR, and NMR spectroscopy and by X-ray diffraction. The crystal structure of [Co(DH)2(An)2][SbF6] · H2O (I) and [Co(NioxH)2(PPh3)2][SbF6] (II) is stabilized by the electrostatic interactions between the Co(III) complex cations and outer-sphere fluorine-containing anions and by hydrogen bonds between structural units. 相似文献
16.
Alina Bieńko Julia Kłak Jerzy Mroziński Rafał Kruszyński Dariusz C. Bieńko Roman Boča 《Polyhedron》2008
Two Re(IV)–Cu(II) heterometallic complexes {(CuLα)[ReCl4(ox)]}n (where Lα = N-meso-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4), 1, and (CuLβ)[ReCl4(ox)] (Lβ = N-rac-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4N-rac-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4), 2, were synthesized. The [CuL2+] macrocyclic cation is coordinated from above and below by [ReCl4(ox)]2− units through the chloro-ligands and creates a chloro-bridged heterometallic ReIV–CuII one-dimensional zig-zag chain. Compound 2 can be viewed as a heterobimetallic dinuclear unit, in which the Re(IV)-Cu(II) centers are linked by an oxalato bridge. The magnetic behavior of 1 and 2 has been investigated over the temperature range 1.8–300 K. Compound 1 behaves like a ferrimagnetic {Re(IV)–Cu(II)} bimetallic, one-dimensional chain with intrachain antiferromagnetic coupling. Compound 2 shows a weak antiferromagnetic interaction within the [Re(IV)–Cu(II)] unit along with a strong single-ion anisotropy, D(Re) = −63 cm−1. 相似文献
17.
WEI Ping-Rong JIA Lu LIU Chang-Rang FAN Yao-TingDepartment of Chemistry Zhengzhou University Zhengzhou Henan ChinaGAO SongResearch Center of Rare Earth Chemistry Peking University Beijing China 《中国化学》1994,12(6):503-508
The two complexes [Ni(oxen)Cu(L)2](ClO4)2.xH2O (L=2,2'-bipyridyl(bpy), 1,10-phenanthroline(phen)) have been synthesized, where oxen is N,N'-bis(2-aminoethyl)oxamido di-anion. The crystal structure of [Ni(oxen)Cu(bpy)2](ClO4)2.CH3OH has been determined by X-ray diffraction method. The crystal is triclinic system, space group P1 with a=12.179(1),b=12.298(2), c=11.476(2) A, a=97.57(1), B=97.52(1), 7=80.29(2), V=1669.04(67) A3, Z=2, Dcalcd=1.667 g/cm3. The structure has been refined to final R of 0.076 and Rw of 0.080, respectively. The complexes have an extended oxamido-bridged structure and consist of Ni(Ⅱ) ion in a square planar environment and Cu(Ⅱ) ion in a distorted octahedral environment. 相似文献
18.
19.
20.
Transition Metal Chemistry - The Fe(III) complex [FeIII(bpdc)(Hbpdc)] (1) (bpdc?=?2,2′-bipyridyl-6,6′-dicarboxylate and... 相似文献