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THE SYNTHESIS OF 4,5-BIS(4'-BROMOBENZYLTHIODITHIOLE-2-THIONE WITH ONE DIMENSIONAL INTERMOLECULAR INTERACTIONS
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作者 Fang QI(Institute of Crystal Materials, Shandong University, Jinan, 250100) 《Chinese Chemical Letters》 SCIE CAS CSCD 1996年第2期103-104,共2页
The title compound BBBT-Dry (C17H12Br2S5, Mr=536.42) has been synthesized and its structure feature has been described. BBBT-DTT is characterized by one dimensional chains formed by S…S (head to head) and Br…Br (tai... The title compound BBBT-Dry (C17H12Br2S5, Mr=536.42) has been synthesized and its structure feature has been described. BBBT-DTT is characterized by one dimensional chains formed by S…S (head to head) and Br…Br (tail to tail) intermolecular interactions. 展开更多
关键词 BIS THIONE WITH INTERMOLECULAR INTERACTIONS OF SYNTHESIS dithiole DIMENSIONAL BROMOBENZYLTHIO
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Dielectric Properties of Self-assembled Monolayers of Dithiols
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作者 罗江龙 夏晨 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 北大核心 2006年第6期515-518,共4页
Dielectric properties of dithiol self-assemble monolayers (SAMs) under ac electric field were presented, Using a Hg-SAM/SAM-Ⅱg junction, the ac impedances of dithiol SAMs were measured using a sinusoidal perturbati... Dielectric properties of dithiol self-assemble monolayers (SAMs) under ac electric field were presented, Using a Hg-SAM/SAM-Ⅱg junction, the ac impedances of dithiol SAMs were measured using a sinusoidal perturbation of 30 mV (peak to-peak) with the frequency ranging from 1 Hz to 1 MHz at zero bias. The contributions from dithiol SAMs and solvent interlayers were separated due to their different behaviors at ac impedance. The peak position in the loss spectra (the plot; of tgδ vs. frequency) moves to low frequcney with the incrcase of chain length of dithiols. Using a correlation of peak position with the chain length, the active energies of 23-39 meV for dithiol SAMs of C6-C10 under an ac electric field were derived, 展开更多
关键词 Dithiol self-assembled monolayers AC impedance Loss spectra
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MAGNETIC INVESTIGATION OF THE NICKEL COMPLEXES OF MULTI-SULFUR 1.2-DITHIOLATES 被引量:1
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作者 Tian Ming YAO Xian Fa SHI Xiao Zeng YOU(Department of Chemistry,Tongji University, Shanghai 200092)(State Key Laboratory of Coordination Chemistry,Nanjing University,Nanjing 210093) 《Chinese Chemical Letters》 SCIE CAS CSCD 1996年第7期685-686,共2页
The magnetic susceptibility of (Bu4N)(NI(MEDT)2) and (Bu4N)(Ni(PHDT)2)(MEDT:5-methyl-6-hydro-1, 4-dithiin-2, 3-dithiolate, PHDT: 5-phenyl-6-hydro-1.4-dithiin- 2,3-dithiolate) was measured in the temperature range of 7... The magnetic susceptibility of (Bu4N)(NI(MEDT)2) and (Bu4N)(Ni(PHDT)2)(MEDT:5-methyl-6-hydro-1, 4-dithiin-2, 3-dithiolate, PHDT: 5-phenyl-6-hydro-1.4-dithiin- 2,3-dithiolate) was measured in the temperature range of 75-300K. The magnitudeof magnctic moments is consistent,with a doublet state arising from Ni(Ⅲ).Antiferromagnetic properties were discussed in consideration of molecularstructure. 展开更多
关键词 MULTI DITHIOLATES INVESTIGATION MAGNETIC COMPLEXES NICKEL OF SULFUR THE
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Synthesis and Structure of Iron Complex with 1,2-Dithiolate-1,2-dicarba-closo-dodecaborane [Li(THF)_4][Fe(S_2C_2B_10H_10)_2(THF)] 被引量:1
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作者 卢士香 金国香 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2002年第5期493-496,共4页
The crystal of complex [Li(THF)4][Fe(S2C2B10H10)2(THF)] 3 belongs to monoclinic, space group P21 with a = 11.964(2), b = 16.527(3), c = 12.554(3) ? = 108.70(3)? V = 2351.3(8) 3, Z = 2, Mr = 835.95, Dc = 1.181 g/cm3, ... The crystal of complex [Li(THF)4][Fe(S2C2B10H10)2(THF)] 3 belongs to monoclinic, space group P21 with a = 11.964(2), b = 16.527(3), c = 12.554(3) ? = 108.70(3)? V = 2351.3(8) 3, Z = 2, Mr = 835.95, Dc = 1.181 g/cm3, (MoK? = 5.30 cm1, F(000) = 874, R = 0.0622 and Rw = 0.1538 for 1641 observed reflections with I > 2(I). The ionic complex of 3 contains the square pyramidal anion of [Fe(S2C2B10H10)2(THF)] and the tetrahedral cation of [Li(THF)4]+. The iron is 5-coordinated and located in the square pyramidal configuration. The iron atom and the four sulfur atoms are almost coplanar. The Lithium atom is coordinated with four oxygen atoms of four THF molecules and located in a tetrahedral configuration. 展开更多
关键词 dithiolate carborane iron complex crystal structure
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Synthesis and Crystal Structure of (Bu_4N)_2Hg(i-mnt)_2
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作者 He Gen ZHENG Qiong Hua JIN Xin Quan XIN 《Chinese Chemical Letters》 SCIE CAS CSCD 2001年第2期185-186,共2页
The synthesis and the crystal structure of the title compound (Bu4N)(2)Hg(S2C=C(CN)(2))(2) 1 is reported herein. The crystal is attributed to trielinic system and space group P-1, fw=965.88. The crystal lattice parame... The synthesis and the crystal structure of the title compound (Bu4N)(2)Hg(S2C=C(CN)(2))(2) 1 is reported herein. The crystal is attributed to trielinic system and space group P-1, fw=965.88. The crystal lattice parameters are a=9.45(1), b=15.827(2), c=17.619(2)Angstrom, alpha =108.12(2), beta =99.54(2), gamma =97.60(2)degrees, V=2421.9(8)Angstrom, mu (MoKalpha)=3.390mm(-1), Z=2, D-c=1.324g.cm(-3), F(000)=996, R=0.054, wR=0.058. 展开更多
关键词 synthesis crystal structure mercury(II) complex isomaleonitrile dithiolate
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Reactions of a 16-electron Cp*Co half-sandwich complex containing a chelating 1,2-dicarba-closo-dodecaborane-1,2-dithiolate ligand with alkynones HC≡C-C(O)R (R=OMe,Me,Ph) 被引量:2
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作者 GUOYIQIBAYI Gulnisa 《Science China Chemistry》 SCIE EI CAS 2010年第10期2129-2138,共10页
The reaction of the 16e half-sandwich complex Cp*Co(S2C2B10H10) (1) (Cp* = pentamethylcyclopentadienyl) with excess methyl acetylene monocarboxylate, HC≡C-CO2Me, affords the 18e complexes 2-6. Compound 2 bears a B-CH... The reaction of the 16e half-sandwich complex Cp*Co(S2C2B10H10) (1) (Cp* = pentamethylcyclopentadienyl) with excess methyl acetylene monocarboxylate, HC≡C-CO2Me, affords the 18e complexes 2-6. Compound 2 bears a B-CH2 unit in which B-substitution occurs in the B(3)/B(6) position of the ortho-carborane cage. Complexes 3-6 are geometrical isomers, in which the alkyne is twofold inserted into one of the Co-S bonds in all the four possible ways. Treatment of 1 with excess 3-butyn-2-one or phenyl ethynyl ketone, HC≡C-C(O)R (R = Me, Ph), at ambient temperature leads to the 18e complexes 7-10, respectively, with two alkynes inserted into one of the Co-S bonds. All the new complexes were fully characterized by spectroscopic techniques and elemental analysis. The solid-state structures of 2, 3, 5, 7, 8, 9 and 10 were further characterized by X-ray structural analysis. 展开更多
关键词 ortho-carborane DITHIOLATE alkynone cobalt complex HALF-SANDWICH crystal structure
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Small molecule fluorescent probes of protein vicinal dithiols 被引量:1
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作者 Guodong Hu Huiyi Jia +2 位作者 Lanning Zhao Dong-Hyung Cho Jianguo Fang 《Chinese Chemical Letters》 SCIE CAS CSCD 2019年第10期1704-1716,共13页
The vicinal dithiol motif is widely present in proteins, and is critical for proteins’ structures and functions.In recent years, a variety of fluorescent probes with high specificity and outstanding optical propertie... The vicinal dithiol motif is widely present in proteins, and is critical for proteins’ structures and functions.In recent years, a variety of fluorescent probes with high specificity and outstanding optical properties for sensing protein vicinal dithiols have been developed. In this review, we summarized the fluorescent probes of protein vicinal dithiols in literature. These probes are classified into four types based on their acceptor sites, i.e., biarsenical probes, monoarsenical probes, dimaleimide probes and diacrylate probes.Through analyzing the properties of different probes, we expect that this review would help readers further understand the structural factors of these probes and provide the design strategy for novel fluorescent probes with improved properties. 展开更多
关键词 FLUORESCENT PROBE PROTEIN VICINAL DITHIOLS Arsenical PROBE THIOL redox Reaction-based PROBE
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Cluster-cracking Reaction, a New Method to Synthesize Unsymmetrical Dithiolate Complexes for the Study of Third-Order Nonlinear Optical Properties 被引量:1
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作者 卞国庆 朱琴玉 +6 位作者 戴洁 王昕 杨巍 严泽民 孙真荣 宗像惠 前川雅彦 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2003年第5期537-543,共7页
A new cluster-cracking method to synthesize dithiolate metal complexes was reported and four unsymmetric complexes with formula (Me4N)(2)[M(Ln)(SPh)(2)] (M = Cd and Zn, L1 = dmit = 1, 3-dithiole-2-thione-4, 5-dithiola... A new cluster-cracking method to synthesize dithiolate metal complexes was reported and four unsymmetric complexes with formula (Me4N)(2)[M(Ln)(SPh)(2)] (M = Cd and Zn, L1 = dmit = 1, 3-dithiole-2-thione-4, 5-dithiolate, L2 = dmid = 1, 3-dithiole-2-one-4, 5-dithiolate, SPh = thiophenolate) (1-4) were characterized by, elemental analysis, ER, UV NMR spectra and so on. The advantages of this method am summarized in two aspects: (1) the preparation is very convenient; (2) the reaction usually completed giving the product with high,purity. The crystal structure of 1 showed that the bond distances of Cd(II) to the sulfur of the thiophenolate group are shorter than those of Cd(II) to the sulfur of dmit, so that the thiophenolate group does not be replaced in the reaction and the mixed ligand complexes are the dominant products. The dmit complexes showed well third-order NLO properties, but not of the dmid complexes, although druid is an analogue to dmit. 展开更多
关键词 synthetic method dmit complexes DITHIOLATE NLO properties
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Coupling effects in QD dimers at sub-nanometer interparticle distance
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作者 Carlo Nazareno Dibenedetto Elisabetta Fanizza +10 位作者 Rosaria Brescia Yuval Kolodny Sergei Remennik Annamaria Panniello Nicoletta Depalo Shira Yochelis Roberto Comparelli Angela Agostiano Maria Lucia Curri Yossi Paltiel Marinella Striccoli 《Nano Research》 SCIE EI CAS CSCD 2020年第4期1071-1080,共10页
Currently,intensive research efforts focus on the fabrication of meso-structures of assembled colloidal quantum dots(QDs)with original optical and electronic properties.Such collective features originate from the QDs ... Currently,intensive research efforts focus on the fabrication of meso-structures of assembled colloidal quantum dots(QDs)with original optical and electronic properties.Such collective features originate from the QDs coupling,depending on the number of connected units and their distance.However,the development of general methodologies to assemble colloidal QD with precise stoichiometry and particle-particle spacing remains a key challenge.Here,we demonstrate that dimers of CdSe QDs,stable in solution,can be obtained by engineering QD surface chemistry,reducing the surface steric hindrance and favoring the link between two QDs.The connection is made by using alkyl dithiols as bifunctional linkers and different chain lengths are used to tune the interparticle distance from few nm down to 0.5 nm.The spectroscopic investigation highlights that coupling phenomena between the QDs in dimers are strongly dependent on the interparticle distance and QD size,ultimately affecting the exciton dissociation efficiency. 展开更多
关键词 quantum dots DIMERS surface chemistry DITHIOLS COUPLING
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Hydrothermal Synthesis, Crystal Structure and Optical Properties of [M(en)3](ndt)·H2O (M=Ni^Ⅱ, Co^Ⅱ, Mn^Ⅱ and ndt= 1,5-Naphthalenedithiolate)
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作者 于景华 魏永革 +3 位作者 丁长江 杜洪光 阎盛刚 郭洪猷 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2006年第5期695-700,共6页
Three novel compounds [Ni(en)3](ndt)·H2O (1), [Co(en)3](ndt)·H2O (2) and [Mn(en)3](ndt)·H2O (3) (en= ethylenediamine, ndt= 1,5-naphthalenedithiolate) have been synthesized under hydr... Three novel compounds [Ni(en)3](ndt)·H2O (1), [Co(en)3](ndt)·H2O (2) and [Mn(en)3](ndt)·H2O (3) (en= ethylenediamine, ndt= 1,5-naphthalenedithiolate) have been synthesized under hydrothermal conditions, The structures were characterized by single crystal X-ray diffraction and all belong to monoclinic space group Cc. The [M(en)3]^2+ cations (M=Ni^Ⅱ, Co^Ⅱ, Mn^Ⅱ), ndt anions and crystallized water molecules assemble an iso-structural three-dimensional network through H-bonding interactions. Optical absorption properties and band gaps of such three compouds were determined with UV/Vis/NIR diffuse reflectance spectra. 展开更多
关键词 DITHIOLATE tris(ethylenediamine)-metal chelate hydrothermal synthesis crystal structure optical property
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