共查询到20条相似文献,搜索用时 984 毫秒
1.
Jusang Park Han-Bo-Ram Lee Doyoung Kim Jaehong Yoon Clement Lansalot Julien Gatineau Henri Chevrel Hyungjun Kim 《Journal of Energy Chemistry》2013,22(3):403-407
Cobalt (Co) thermal or plasma enhanced atomic layer deposition (PE-ALD) was investigated using a novel metal organic precursor, Co(MeCp)2, and NH3 or H2 or their plasma as a reactant. The growth characteristics, electrical and microstructural properties were investigated. Especially, PE-ALD produced Co thin films at low growth temperature down to 100 °C. Interestingly, the low temperature growth of Co films showed the formation of columnar structure at substrate temperature below 300 °C. The growth characteristics and films properties of PE-ALD Co using bis(η-methylcyclopentadienyl) Co(II) (Co(MeCp)2) was compared with those of PE-ALD Co using other Cp based metal organic precursors, bis-cyclopentadienyl cobalt (II) (CoCp2) and cyclopentadienyl isopropyl acetamidinato-cobalt (Co(CpAMD)). 相似文献
2.
Malinovskii S. T. Coropchanu E. B. Bologa A. O. Bel'skii V. K. 《Russian Journal of Coordination Chemistry》2002,28(5):346-351
The complex compounds [Co(DH)2(Anil)2][BF4] and [Co(DH)2(Py)2][BF4] were synthesized from Co(BF4)2 · 6H2O–DH2–A–alcohol–water systems (DH2 is dimethylglyoxim and A is pyridine (Py) or aniline (Anil)), and their crystal structures were determined using X-ray diffraction analysis. In octahedral Co(III) complexes, two dimethylglyoxime radicals lie in the equatorial plane and are joined via the intramolecular hydrogen bond O–H···O. The complexes with pyridine and aniline have similar configurations but different crystal structures. 相似文献
3.
4.
《Journal of the Less Common Metals》1987,127(1):155-160
The magnetic and spectroscopic (UV, visible-IR and electron paramagnetic resonance spectra) properties of the molecular complexes [Co(AGlH)2py2][Cr(NH3)2(NCS)4] and [Co(AGlH)2py2][Co(NH3)2(NO2)4] (where AGlH2 is diaminoglyoxime) have been examined in solid state. The molecular structure of the complexes and the nature of the interaction in the crystals has been considered. 相似文献
5.
Lisiecki I Walls M Parker D Pileni MP 《Langmuir : the ACS journal of surfaces and colloids》2008,24(8):4295-4299
In this paper we report the preparation of ordered hexagonal 2D arrays of core/shell Cohcp/CoO nanocrystals. A full structural investigation has been carried out using high-resolution transmission electron microscopy, electron diffraction, and electron energy-loss spectroscopy. 相似文献
6.
7.
The crystal structures of Co3[Co(CN)6]2, 12 H2O (a, = 10.210 ± 0.005 Å) and Cd3[Co(CN)6]2, 12 H2O (a = 10.590 ± 0.005 Å) have been determined by X-ray powder methods. According to the measured density the unit cell contains 1 1/3 formula units with 4 Co2+ (Cd2+) in 4a, 2 2/3 Co3+ in 4b, 16 C and 16 N in 24e, 8 H2OI near 24e, (96k) and 8 H2OII near 8 c (192 l). Structure factor calculations based on the space group Oh5 - F m 3 m lead to the following final values of the reliability index R: 0.038 (Co3[Co(CN)6]2, 12 H2O) and 0.037 (Cd3[Co(CN)6]2, 12 H2O). The interatomic distances for the cobaltous compound (in parentheses for the cadmium compound) are: Co3+-C: 1.88 Å (1.89); C-N: 1.15 Å (1.17); Co2+-N: 2.08 Å (2.24); Co2+-OI: 2.10 Å (2.27); shortest OI-H-OII-bonds: 2.89 Å (2.82). Co3+ is octahedrally coordinated by six carbon atoms, the divalent metal ion by four nitrogen atoms and two water molecules. The two different metal ions are connected by M2+-N-C-Co3-bonds to a threedimensional network. The infrared and electronic spectra are shown to be in agreement with the results of the structure analyses of these compounds. The observed positions of the OH-stretching vibrations lead to a hydrogenbond-length of 2.8–2.95 Å. 相似文献
8.
《Journal of Coordination Chemistry》2012,65(9):1570-1581
Three ligands, 2-(3-(carboxymethyl)-1,10-phenanthroline-[5,6-d]imidazole-1-yl)acetate (CPIA), 2-(benzo[d][1,3]dioxol-4-yl)-1H-imidazo[4,5-f][1,10]phenanthroline (BIP), and 2-(9H-carbazol-3-yl)-1H-imidazo[4,5-f][1,10]phenanthroline (CIP), and their complexes, [Co(phen)2(CPIA)]3+ (1) (phen = 1,10-phenanthroline), [Co(phen)2(BIP)]3+ (2), and [Co(phen)2(CIP)]3+ (3), have been synthesized and characterized. Binding of the three complexes with calf thymus DNA (CT-DNA) has been investigated by spectroscopic methods, cyclic voltammetry, and viscosity measurements. The three complexes bind to DNA through an intercalative mode, and the size and shape of the intercalative ligands have significant effects on the binding affinity of complexes to CT-DNA. 相似文献
9.
10.
11.
12.
13.
The compounds Co(TpivPP) (1), Co(TpivPP)(NO2)(1-MeIm) (2), and Co(TpivPP)(NO2)(1,2-Me2Im) (3) have been synthesized (TpivPP = meso-tetrakis(alpha, alpha, alpha, alpha-o-pivalamidophenyl)porphyrinato dianion), and their structures have been determined with single-crystal X-ray diffraction methods. 1: a = 17.578(1) A, b = 17.596(1) A, c = 20.639(1) A, beta = 115.03(1) degrees, P2(1)/c, Z = 4, T = -120 degrees C. 2: a = 18.522(4) A, b = 18.942(4) A, c = 18.177(4) A, beta = 90.68(3) degrees, C2/c, Z = 4, T = -70 degrees C. 3: a = 18.998(4) A, b = 19.187(4) A, c = 18.000(4) A, beta = 90.96(3) degrees, C2/c, Z = 4, T = -120 degrees C. Compounds 2 and 3 have crystallographically imposed 2-fold axes. In 2 and 3, which represent R-state (relaxed) and T-state (tense) models, respectively, for hemoglobin, the NO2 ligand is bound on the "picket" side to the Co atom, and either 1-MeIm (for 2) or 1,2-Me2Im (for 3) is bound to the Co atom at the sixth coordination site on the sterically unhindered side of the molecule. The average deviations of atoms from the 24-atom porphyrin core are 0.031, 0.129, and 0.117 A for 1, 2, and 3, respectively. The Co atom is -0.043(1) A out of the mean 24-atom porphyrin plane toward the 1-MeIm ligand in 2 and -0.089(1) A out of the plane toward the 1,2-Me2Im ligand in 3. The bonds of both axial ligands in the R-state model 2, 1.898(4) A for Co-N(O2) and 1.995(4) A for Co-N(base), are shorter than the corresponding bonds in the T-state model 3, 1.917(4) A for Co-N(O2) and 2.091(4) A for Co-N(base). 相似文献
14.
Coordination Chemistry of P‐rich Phosphanes and Silylphosphanes. XIX. [Co4P2(PtBu2)2(CO)8] and [{Co(CO)3}2P4tBu4] from Co2(CO)8 and tBu2P–P=P(Me)tBu2 Co2(CO)8 reacts with tBu2P–P=P(Me)tBu2 yielding the compounds [Co4P2(PtBu2)2(CO)8] ( 1 ) and [{η2tBu2P=P–P=PtBu2}{Co(CO)3}2] ( 2 a ) cis, ( 2 b ) trans. In 1 , four Co and two P atoms form a tetragonal bipyramid, in which two adjacent Co atoms are μ2‐bridged by tBu2P groups. Additionally, two CO groups are linked to each Co atom. In 2 a and 2 b , each of the Co(CO)3 units is η2‐coordinated to the terminal P2 units resulting in the cis‐ and trans‐configurations 2 a and 2 b . 1 crystallizes in the orthorhombic space group Pnnm (No. 58) with a = 879,41(5), b = 1199,11(8), c = 1773,65(11) pm. 2 a crystallizes in the monoclinic space group P21/n (No. 14) with a = 875,97(5), b = 1625,36(11), c = 2117,86(12) pm, β = 91,714(7)°. 2 b crystallizes in the triclinic space group P 1 (No. 2) with a = 812,00(10), b = 843,40(10), c = 1179,3(2) pm, α = 100,92(2)°, β = 102,31(2)°, γ = 102,25(2)°. 相似文献
15.
16.
桥联双核配合物[(DPC)2Co2(H2O)5]·2H2O的合成与晶体结构 总被引:9,自引:0,他引:9
The new complex formulated [(DPC)2Co2(H2O)5]·2H2O (HDPC- is pyridine-2,6-dicarboxylate) has been synthesized and the crystal structure was determined by X-ray diffraction. The crystal structure of the complex belongs to monoclinic system with space group P21/c, a=0.83850(10) nm, b=2.7386(4) nm, c=0.9610(2) nm, β=98.280 (10) °, V=2.1838(6) nm3, Z=4, Dc=1.746 g·cm-3, μ=1.597 mm-1. In the crystal the two Co2+ are in distorted octahedrons. The part of [Co(DPC)2] possess an approximate D2d symmetry, while the part of [OCo(2)(OH2)5] has an approximate C2 symmetry. 相似文献
17.
18.
A study on Cu2Co2SOD and Co2Co2SOD by voltammetry and thin-layer spectroelectrochemistry 总被引:1,自引:0,他引:1
The electrochemistry of Co(2)Co(2)SOD and Cu(2)Co(2)SOD on a pyrolytic graphite electrode (PGE) without using mediators was investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The reversible and quasi-reversible voltammetric responses were observed for Co(2)Co(2)SOD and Cu(2)Co(2)SOD, respectively. Their formal redox potentials and electron numbers involved in electrode reactions were obtained, and are in agreement with those by spectroelectrochemistry (SEC). 相似文献
19.
S. E. Nefedov T. O. Denisova Zh. B. Dobrokhotova F. M. Dolgushin G. V. Romanenko V. N. Ikorskii V. I. Ovcharenko 《Russian Journal of Inorganic Chemistry》2006,51(10):1587-1601
The features of thermal transformations of trimethylacetatocobalt complexes Co2(μ-OOCBut)4(NEt3)2 and Co3(μ-OOCBut)2(μ-OOCBut)4(NEt3)2 with attendant geometric alterations are considered as dependent on temperature on the basis of single-crystal X-ray diffraction, magnetochemical, and thermochemical investigations. 相似文献
20.
两个β-二酮Co(Ⅱ)配合物[Co(β-diketonate)2(py)2]的合成和晶体结构 总被引:4,自引:0,他引:4
钴是生物学上重要的微量元素,它能在一些酶中代替锌,而不改变原来酶的活性犤1犦,钴的光谱和磁性是酶活性部位的有效探针犤2犦。钴催化剂是单活性中心催化剂犤3犦,同时又是很好的乙烯齐聚催化剂犤4,5犦。β-二酮是重要的催化剂原料,徐德民等犤6犦报道了含有β-二酮金属配合物催化剂制备间规聚苯乙烯与聚丙烯共混复合物。宓霞等犤7犦报道了含β-二酮钛非茂催化剂催化降冰片烯聚合。近年来,已报道了一些β-二酮的Co?配合物犤8~10犦的晶体结构,本文报道两个β-二酮的Co?配合物的合成和晶体结构。1实验部分1.1配合… 相似文献