bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis, Crystal Structure of Cis‐dioxo‐catecholatotungsten(VI) Complex and Its NMR Studies on the Interaction with ATP
Authors: Xiao‐Ming Lu , Shun‐Cheng Liu , Ling Jiang , Xi‐An Mao , Zhao‐Hui Ye 
Published: September 2010

AbstractCis‐dioxo‐catecholatotungsten(VI) complex anion [W(VI)O2‐(OC6H2O)]2‐was obtained with discrete protonated ethylene‐diamine (NH2CH2CH2NH3)+ cations by the reaction of tetra‐butyl ammonium decatungstate with catechol in the mixed solvent of CH3OH, CH3CN and ethylenediamine, and compared with its molybdenum analogue [Mo(v)O2(OC6H4O)2]3‐by crystal structure, UV, EPR. The results of the UV and EPR spectra show that tungsten is less redox active than molybdenum since the molybdenum is reduced from Mo(VI) to Mo(V) but tungsten stays in the original highest oxidized state Mo (VI) when they are crystallized from the solution above. It is worthy to note that [W(VI)O2(OC6H4O2)]2‐shows the same coordination structure as its molybdenum analogue in which the metal center exhibits distorted octahedral coordination geometry with two cis‐dioxocatecholate ligands and might have the related coordination structure feature with the cofactor of flavoenzyme because [Mo(v)O2(OC6H4O)2]3‐presented essentially the same EPR spectra as flavoenzyme. The NMR studies on the interaction of the title complex with ATP reveal that the reduction of W(VI) to W(V) occurs when the title complex is dissolved in D2O and the W (V) is oxidized again when ATP solution is mixed with original solution and the hydrolysis of the catechola‐to ligand take places at mean time being monitored by 1H NMR and 13C NMR spectra.
Stereocontrol of the Schiff Base of Substituted Benzaldehyde to Staudinger Cycloaddition Reaction
Authors: Chuan‐Min Qi , Ling‐Chun Yang , Peng‐Li Sun 
Published: September 2010

AbstractSyntheses of 4 novel chiral azetidin‐2‐one derivatives, which were characterized by 1H NMR, ER, specific rotation and elemental analysis, through Staudinger cycloaddition reaction of Schiff base of benzaldehyde with chlorine substitution at different position in benzene ring, were described. For the first time, this type of 3S, 4R configuration azetidin‐2‐one mono‐crystals with many chiral centers [(3S,4R)‐3‐hydroxy‐N‐[(S)‐(1‐phenyl)ethyl]‐4‐(2′‐chlorophenyl)‐azetidin‐2‐one mono‐crystal] were obtained, the structures of which were determined by X‐ray diffraction analysis. The effects of Schiff base of benzaldehyde with chlorine substitution at different position in benzene ring on stereoselectivity of Staudinger cycloaddition reaction products were discussed and the results are showed as below: 2‐chlorophenyl Schiff base favored to yield 3S.4R configuration product, but 4‐chlorophenyl Schiff base favored to yield 3S,4S configuration product. The reaction orientation of 2,4‐dichlorophenyl Schiff base was determined by corporate effect of 2‐and 4‐chlorine, and that of the 4‐chlorine was more obvious. In contrast to 4‐chlorophenyl, although the main product was 3R, 4S configuration, 3‐chlorophenyl owned lower selectivity.
Calix[6]arene‐bismetalloporphyrins as Enzyme Models for P450 V. Catalytic Performance in Epoxidation of Styrene
Authors: Dong‐Hong Li , Shu‐Hua Chen , Hua‐Ming Zhao 
Published: September 2010

AbstractIn this paper the catalytic performance of the calix [6]arene‐bis‐metalloporphyrins in the epoxidation of styrene was studied. The influence of phase transfer catalyst, pH value, buffer a‐gent, substrate concentration, substituent on the benzene ring of porphyrin, and the central metal ion, etc., on the reaction rates were investigated meticulously. The results showed that the calix [6] arene‐bismetalloporphyrins had a much higher catalytic activity than that of the corresponding metalloporphyrins.
Microwave‐enhanced Mannich Condensation of Terminal Alkynes, Primary Amines with Paraformaldehyde on Cuprous Iodide Doped Alumina under Solvent Free Conditions
Authors: 'Lei Wang , Pin‐Hua Li 
Published: September 2010

AbstractA microwave‐enhanced, solventless Mannich condensation of terminal alkynes, primary amines with paraformaldehyde on cuprous iodide doped alumina has been investigated. The structures of products depend on the ratio of alkyne to amine and paraformaldehyde.
Diiodination of Alkynes in Supercritical Carbon Dioxide
Authors: Jin‐Heng Li , Ye‐Xiang Xie , Du‐Lin Yin , Huan‐Feng Jiang 
Published: September 2010

AbstractA general, green and efficient method for the synthesis of trans‐diiodoalkenes in CO2 (sc) has been developed. Trans‐diiodoalkenes were obtained stereospecifically in quantitative yields via diiodination of both electron‐rich and electron‐deficient alkynes in the presence of KI, Ce(SO4)2 and water in supercritical carbon dioxide [CO2(sc)] at 40 °C.
Ion Channel Behavior of a Supported Bilayer Lipid Membrane Composed of 5,5‐Ditetradecyl‐2‐(2‐trimethyl‐ammonioethyl)‐1,3‐dioxane Bromide Modified Glassy Carbon Electrode
Authors: Gong Jing‐Ming , Lin Xiarig‐Qin 
Published: September 2010

AbstractA synthetic cationic surfactant, 5,5‐ditetradecyl‐2‐(2‐trimethyl‐ammonioethyl)‐1,3‐dioxane bromide (DTDB), was used to construct a supported bilayer lipid membrane (s‐BLM) coated on an underlying glassy carbon electrode (GCE). Electrochemical impedance spectroscopy (EIS), small‐angle X‐ray diffraction (SAXD) and cyclic voltammetry were used to characterize the s‐BLM. Both EIS and SAXD data indicated that the synthetic lipid exists as a well‐oriented bilayer in the membrane. The voltammetric study showed that the lipid membrane can open ion channels in the presence of ClO4−stimulant with Ru(bpy)2/3+ as marker ions and give distinct channel currents. The channels can be closed and open up again many times by removing or introducing ClO4−anions.
Chiral Guanidine Catalyzed Annulation to the Core Structure of (‐)‐Huperzine A
Authors: Pan Qiang‐Biao , Ma Da‐Wei 
Published: September 2010

AbstractA bridged bicyclic compound (7), the key intermediate for the synthesis of (‐)‐huperzine A (1), was prepared by diastereoselective Michael‐aldol annulation of β‐keto ester (4) catalyzed by chiral guanidine (2). A variety of chiral catalysts, substrates and reaction conditions were tested.
Comparison of (η6‐Fluoroarene)tricarbonylchromium Complexes with Their Chloro‐analogs in Radical Aromatic Substitutions
Authors: Lin He‐Chun , Yang Li , Li Chao‐Zhong 
Published: September 2010

AbstractReactions of fluoroarene‐Cr(CO)3 complexes with SmI2 and carbonyl compounds in THF/HMPA at‐40–60°C afforded the corresponding radical aromatic substitution products in high yield. Compared to the corresponding chloroarene‐Cr(CO)3 complexes, fluoroarene‐Cr(CO)3 complexes showed a higher efficiency and slightly lower regioselectivity.
Application of DEPBT on the Synthesis of the Protected Dipeptides Containing Histidine with Unprotected Imidazole Group by Solution Method
Authors: Shen Hong‐Yan , Tian Gui‐Ling , Zhu Wen‐Jiang , Ha Sha , Ye Yun‐Hua 
Published: September 2010

Abstract3‐(Diethoxyphosphoryloxy)‐1, 2, 3‐benzotriazin‐4(3H)‐one (DEPBT) was an organophosphorus coupling reagent developed by our group. It was an effective coupling reagent for the synthesis of protected peptides containing Tyr, Ser and Thr with unprotected hydroxy group on their side chain. The further study of the synthesis of a series of protected dipeptides containing histidine with unprotected imidazole group using DEPBT is reported. During the synthetic procedure, the imidazole group of histidine did not need to be protected. When the carboxyl components were N‐protected aromatic amino acids or basic amino adds, the yields were relatively high (63%—81%). However, when the carboxyl components were N‐protected acidic amino adds, the yields were relatively low (47%—48%). The results expanded the application of DEPBT on the synthesis of bioactive peptides containing histidine.
Candida rugosa Lipase‐catalyzed Kinetic Resolution of Hydroxy‐alkanephosphonates
Authors: Zhang Yong‐Hui , Xu Cheng‐Fu , Li Jin‐Feng , Yuan Cheng‐Ye 
Published: September 2010

AbstractAn efficient lipase‐catalyzed enantioselective hydrolysis of butyryloxyalkanephosphonates in water‐equilibrated diisopropyl ether was developed. The relationship between the substrates'structure and the reactivity, as well as the enantioselectivity of this enzymatic transformation was studied. The catalytic preference of crudeCandida rugosalipase toward such molecules was assigned according to modified Mosher's method and X‐ray crystallographic analysis. Optically pure 2‐hydroxy‐2‐arylethanephosphonates, 3‐hydroxy‐3‐phenylpropanephosphonate, and 3,3, 3‐trifluoro‐2‐hydroxypropanephosphonates were conveniently prepared in this manner.
Studies on the Model Synthesis of the Brassinolide and Dolicholide's Side Chains
Authors: Peng Li‐Zeng , Zhang Feng‐Zhi , Mei Tian‐Sheng , Zhang Tao , Liu Hua‐Wei , Li Yu‐Lin 
Published: September 2010

AbstractA highly stereoselective synthesis of the side chain enantiomers of brassinolide and dolicholide through an aldol reaction of 2‐(4‐methoxy benzyloxyl) propionylaldehyde (5) with the anion of 1‐(tert‐butyldimethylsiloxy)‐3‐methyl‐2‐butanone (6) is described.
A New and Practical Procedure for the Preparation of the Glucohexatose Phytoalexin Elicitor
Authors: Wang Hai‐Rong , Li Zhao‐Long , Ning Jun , Kong Fan‐Zuo 
Published: September 2010

AbstractThe phytoalexin elicitor β‐(1→3)‐branched β‐(1→6)‐linked glucohexatose has been regio‐and stereospecifically synthesized by coupling of the 3, 6‐branched gluco‐trisaccharide Schmidt reagent 10 with a mixture of multiol) 3, 6‐branched gluco‐trisaccharides 13 which consists of free 5, 6′‐OH trisaccharide, free 5,2′, 6′‐OH trisaccharide, free 5,3′,6′‐OH trisaccharide and so on. The compounds 10 and 13 were prepared from 1,2:5,6‐di‐O‐isopropylidene‐α‐D‐glucofuranose, 2, 3, 4, 6‐tetra‐O‐ben‐zoyl‐α‐D‐glucopyranosyl trichloroacetimidate, and 2, 3, 4, 6‐tetra‐O‐acetyl‐α‐D‐glucopyranosyl trichloroacetimidate through regio‐and stereoselective manners.
Synthesis of Chiral Aminophenols Based on Proline and Their Application in Enantioselective Addition of Diethylzinc to Aldehydes
Authors: Ge Jian‐Feng , Shen Zong‐Xuan , Zhang Ya‐Wen , Lu Xin‐Hua , Lu Zhong‐E 
Published: September 2010

AbstractThree 2‐{(3R, 7aS)‐1, 1‐disubstituted‐tetrahydro‐1H‐pyrrolo [1, 2‐c] [1, 3] oxazol‐3‐yl} phenols have been synthesized from salicylaldehyde and amino alcohols derived from L‐proline, and used as ligands in enantioselective addition of diethylzinc to aldehydes, the ee values of obtained secondary alcohols were found in the range of 0–90%.
Using Natural Cinchona Alkaloids to Promote the Enantioselective Addition of Dialkylzinc to N‐Diphenylphosphinylimines
Authors: Zhang Hai‐Le , Fang Chun‐Mei , Li Xin , Gong Liu‐Zhu , Mi Ai‐Qiao , Cui Xin , Jiang Yao‐Zhong 
Published: September 2010

AbstractCinchona alkaloids are utilized as chiral ligands to promote the enantioselective addition of dialkylzinc to N‐diphenylphosphinylimines affording enantiomerically enriched N‐diphenylphosphinylamines in up to 91% ee.
Fabrication of Dendrimer‐like PAMAM Based on Silica Nanoparticles
Authors: Liu Peng , Tian Jun , Liu Wei‐Min , Xue Qun‐Ji 
Published: September 2010

AbstractA G 4.0 dendrimer‐like poly(amido amine) (PAMAM) based on silica nanoparticles was fabricated via a divergent approach. It was built from γ‐aminopropyl silica nanoparticles (APSN) core via repetitive addition of acrylate (MA) and hexylenediamine (HDA). FT‐IR and EA were used to monitor the progress of dendrimer during each step. The amino group content of the resulting product increased from 0.49 to 3.72 mmol/g after the 4th generation. In addition, the percentage of grafting increased with increasing generation and reached to 65.9% after 4th generation. It was found that the resulting silica nanoparticles could be dispersed in methanol with a mean hydrodynamic particle diameter of 152.7 nm although the silica nanoparticles had agglomerated during the storage period.
Isolation and Purification of a Novel Long‐chain Acyl Catechin from Lipophilic Tea Polyphenols
Authors: Chen Ping , Du Qi‐Zhen 
Published: September 2010

AbstractLipophilic tea polyphenols (LTP) was prepared by esterification of green tea polyphenols (GTP) with hexadecanoyl chloride. A novel long‐chain acyl catechin was isolated and purified from LTP by high‐speed countercurrent chromatography (HSCCC). Its molecular structure was elucidated as epigallocatechin‐3‐O‐gallate‐4′‐O‐hexadecanate by elemental analysis, IR, MS and 1H NMR spectra.
Synthesis and Structural Characterization of Three New Inorganic “Host‐guest” Polyoxomolybdates
Authors: Wen‐Bin Yang, , Can‐Zhong Lu, , Hong‐Hui Zhuang, 
Published: September 2010

AbstractSince two interesting inorganic “host‐guest” polyoxomolybdates 1 and 2 have been reported previously, we have now succeeded in selectively isolating three new acetated “host‐guest” polyoxomolybdates 3–5, which considerably extend the range of structures in the cyclic polyoxomolybdate catalogue. 3 crystallizes in the triclinic space group P‐1 with a = 1.22235(1) nm, b = 1.52977(2) nm, c = 1.54022(1) nm, a = 113.746(1)°, β = 96.742(1)°, γ = 101.564(1)°, V = 2.51892(4) nm3, Z =1, Dc = 2.568 g. cm−3. 4 and 5 crystallize in the monoclinic system: P2(1)/n, a = 1.08298(2) nm, b = 1.54029(1) nm, c = 2.78893(5) nm, β =94.2730(10)°, V = 4.63929(12) nm3, Z = 2 and Dc = 2.671 g. cm−3 for 4, and C2/c, a =2.59907(8) nm, b = 1.65992(3) nm, c = 2.28473(7) nm, β‐93.4370(10)°, V = 9.8392(5) nm3, Z = 4 and Dc = 2.556 g. cm−3 for 5. The structures of 3, 4 and 5 consist of 18‐membered “host‐guest” polyoxoanions [ Na (X)2| ∈ |(μ3‐OH)4Moy8MoVI1052(μ2‐CH3COO)2]−(R+9 (X = CH3COO−for 3, DMF for 4 and H2O for 5), which are connected via Na* ions or hydrogen bonds into infinite extended frameworks.
Exact Mass Measurements for α‐Allenic Alcohol by Atmospheric Pressure Chemical Ionization/Time‐of‐flight Mass Spectrometry
Authors: Ping He , Yin‐Long Guo , Guo‐Qiang Chen , Dai‐Wang Xu , Sheng‐Ming Ma 
Published: September 2010

AbstractThe atmospheric pressure chemical ionization/time‐of‐flight mass spectrometry (APCI/TOF‐MS) was applied to determine the mass of five α‐allenic alcohols via their protonated molecular ions using positive ion mode. Polyethylene glycol (PEG) was used as the internal reference. All results were obtained under the resolution of about 5000 FWHM (full width at the half maximum). Solvent effects were studied and the satisfied results were obtained in acetonitrile. Compared with the theoretical values, all absolute errors were less than 1.0 mmu. The effects of nozzle potential, push pulse potential, pull pulse potential, pull bias potential and acquisition rate on exact mass determination were also discussed. APCI/TOF‐MS is proven to be a very sensitive analytical technique and an alternative ionization mode in analyzing thermally labile compounds with relatively weak polarity, such as α‐allenic alcohol.
Enantioselective Conjugate Addition of Diethylzinc to Chalcone Catalyzed by Ni(acac)2 and Chiral β‐Amino Alcohols
Authors: Heng‐Shan Wang , Rui Wang , Chao‐Shan Da , Zhuo‐Qun Xin , Wu Su , Yi‐Nan Xiao , Da‐Xue Liu 
Published: September 2010

AbstractEnantioselective conjugate addition of diethylzinc to chalcone was carried out in the presence of Ni(acac)2 complexed with five pyrrolidinylmethanols derived from L‐proline. (S)‐N‐Benzyl‐2‐(1‐hydroxy‐1‐methylethyl) pyrrolidine was found to be the best ligand in asymmetric conjugate addition among the five ligands. The products were obtained with up to 70% ee. The configuration of the product was determined jointly by the substituents on the carbon of the hydroxy group and the nitrogen atom.
Exact fixed‐node quantum monte carlo: Self‐optimizing procedure
Authors: Huang Hong‐Xin 
Published: September 2010

AbstractIn this paper, a novel exact fixed‐node quantum Monte Carlo (EFNQMC) algorithm was proposed, which is a self‐optimizing and self‐improving procedure. In contrast to the previous EFNQMC method, the importance function of this method is optimized synchronistically in the diffusion procedure, but not before beginning the EFNQMC computation. In order to optimize the importance function, the improved steepest descent technique is used, in which the step size is automatically adjustable. The procedure is quasi‐Newton type and converges super linearly. The present method also uses a novel trial function, which has correct electron‐electron and electron‐nucleus cusp conditions. The novel EFNQMC algorithm and the novel trial function are employed to calculate the energies of 1 1A1 state of CH2, 1A1 state of C8 and the ground‐states of H2, LiH, Li2 and H2O.
Effect of processing and aging on particle size of explosives
Authors: Shu Yuan‐Jie , Liu Shi‐Jun , Dong Hai‐Shan , Hao Ying , Zhan Chun‐Hong , Chen Jie 
Published: September 2010

AbstractInfluence of such processes as molding powder production, pellets pressing and aging under different conditions on particle size of TATB (1,3,5‐triamino‐2,4,6‐trinitrobenzene) and HMX (cyclotetramethylenetetranitramine) was experimentally studied. The results showed that particle size of these explosives was greatly changed before and after molding powder production, but for different size grade of explosive this change was not the same; pressing process had also great effect on explosive particle size, but before and after ageing process explosive particle size did not change seriously.
Multi‐objective modeling and assessment of partition properties: A GA‐based quantitative structure‐property relationship approach
Authors: Yin Chun‐Sheng , Liu Xin‐Hui , Guo Wei‐Min , Liu Shu‐Shen , Han Shuo‐Kui , Wang Lian‐Sheng 
Published: September 2010

AbstractIn this work a multi‐objective quantitative structure‐property relationship (QSPR) analysis approach was reported based on the study on three partition properties of 50 aromatic sulfur‐containing carboxylates. Here multi‐objectives (properties) were taken as a vector for QSPR modeling. The quantitative correlations for partition properties were developed using a genetic algorithm‐based variable‐selection approach with quantum chemical descriptors derived from AMl‐based calculations. With the QSPR models, the aqueous solubility, octanol/water partition coefficients and reversed‐phase HPLC capacity factors of sulfur‐containing compounds were estimated and predicted. Using GA‐based multivariate linear regression with cross‐validation procedure, a set of the most promising descriptors was selected from a pool of 28 quantum chemical semi‐empirical descriptors, including steric and electronic types, to integrally build QSPR models. The selected molecular descriptors included the net charges on carboxyl group (Qoc), the 2nd power of net charges on nitrogen atoms (Q2N), the net atomic charge on the sulfur atoms (Qs), the van der Waals volume of molecule (V), the most positive net atomic charge on hydrogen atoms (QH) and the measure of polarity and polarizability (π), which were main factors affecting the distribution processes of the compounds under study. The statistically best QSPR models of six descriptors were simultaneously obtained by GA‐based linear regression analysis. With the selected descriptors and the QSPR equations, mechanisms of partition action of the Sulfur‐containing carboxylates were able to be investigated and interpreted.
Design of agents interacting with immunoregulating proteins: Potential inhibitors of the phenylpyruvate tautomerase activity catalysed by macrophage migration inhibitory factor (MIF)
Authors: Carpy J. M. Alain , Haasbroek P. P. , Oliver D. W. 
Published: September 2010

AbstractThe macrophage migration inhibitory factor has been implicated in a number of immune and inflammatory processes. MIF presents particular opportunities for drug design and development with potential therapeutic applications. Drug design strategies taking into consideration of specific stereochemical and tautomeric requirements in the interaction of MIF with substrates and inhibitors allow several novel structures to be designed. Our investigations successfully explored the tautomeric and stereochemical aspects of new compounds of the 2‐phenylpyruvic acid type, both experimentally, through synthesis and structural investigations and computationally, through molecular mechanics and quantum mechanics calculations1.
Synthesis, structure and photoluminescence of two zinc carboxylate polymers with different coordination architectures
Authors: Ding Hong , Chen Wei , Yue Qi , Chen Jie‐Sheng , Wang Su‐Ning 
Published: September 2010

AbstractThe hydrothermal reaction of ZnO with benzene‐1,4‐dicarboxylic add gave Zn·BDC·2H2O (1) and Zn‐BDC·H2O (2) (BDC = benzene‐1, 4‐dicarboxylate), respectively. Polymer 1 (C4H4O3ZH0.5) shows a one‐dimensional zigzag chain structure built up from the alternate connection of tetrahedral ZnO4 and BDC units. Polymer 2 (C4H3O2.5Zn0.5) possesses a three‐dimensional framework containing infinite zigzag Zn·Zn·Zn pseudochains generated by five‐coordinate zinc centers and a rectangular channel system including three groups of different straight channels along the [001], [010] and [60–1] directions. The two metal‐organic polymeric compounds exhibit strong photoluminescent emission bands at 402 nm (λex = 260 nm) (for 1) and at 344 nm and 385 nm (λex = 279 nm) (for 2) in the solid state at room temperature.
A study of the relation between current oscillations and pitting
Authors: Ma Hou‐Yi , Yin Bing‐Sheng , Li Gui‐Yan , Guo Wen‐Juan , Chen Shen‐Hao , Tang Kai 
Published: September 2010

AbstractAnodic polarization behaviors of iron in pure H2SO4 and three mixed acidic solutions, H2SO4 + NaCl, H2SO4 + NaNO3 and H2SO4+ NaCl + NaNO3, were investigated. The potentiodynamic sweep curves showed that the current densities rose and dropped irregularly in H2SO4 + NaCl solution at the more anodic potentials since the iron surface suffered pitting attack in the solution, but the pitting corrosion was inhibited effectively in the presence of nitrate ions. The surface morphological measurements indicated that pits appeared on the iron surface in H2SO4 + NaCl solution and only a few unobvious corrosion spots were observed in H2SO4 + NaCl + NaNO3 solution after the iron electrode was potentiostatically polarized at 1.3 V. The oscillatory properties of iron are associated with the susceptibility of the iron to pitting. In H2SO4 + NaCl solution, the regular potentiostatic current oscillations gradually evolved into the irregular current fluctuations due to occurrence of the pitting; whereas in H2SO4 + NaCl + NaNO3 solution, the current oscillations took place regularly, like the oscillatory behavior in the pure H2SO4 solution. Thus, when the higher the oscillatory frequency, the more irregular oscillatory process and the more sensitive to pitting iron occurred.
Investigations on preparation, crystal structure and thermal stability of bis (O‐ethylcarbonodithiolato‐S, S′) (1,10‐phenanthroline‐N1, N10) cobalt(II) complex: [Co(Et‐XA)2· phen] ± H2O (XA = xanthate)
Authors: Jian Fang‐Fang , Li Yan , Wang Huan‐Xiang , Jiao Kui 
Published: September 2010

Abstract[Co(Et‐XA)2· phen] ± H2O was prepared by adding 1,10‐phenanthroline to the EtOH solution of bis(O‐ethylcarbonodithiolato) cobalt(II) [Co(Et‐XA)2]. The single crystal structure has been determined by X‐ray diffraction analysis. The compound is orthorhombic with space group Pna21 and unit‐cell parameters a = 1.0290(2) nm, b = 1.4550(3) nm and c = 1.4860(3) nm. The geometry of each Co atom which coordinates with four S atoms from two xanthate anions and two N atoms from phenanthroline ligand, is a distorted octahedron. The brown crystals were examined by elemental analysis, FT‐IR, UV spectra and thermogravimetric‐differential thermal analysis (TG‐DTA). Thermal decomposition of the compound takes place in several steps. In the first step, the compound releases 1, 10‐phenanthroline ligand, then loses the H2O molecules. In the second step, the complex decomposes to CoS3. The final product of thermal decomposition is CoS. Elemental analysis, IR and UV spectra are in agreement with the proposed structure.