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91.
S. Shanmuga Sundara Raj H. Surya Prakash Rao L. Sakthikumar Hoong‐Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):1113-1114
In the crystal structure of the title compound, C3H3NO2S2, the four‐membered C2S2 ring is planar, as is the whole molecule. The short intramolecular S?O distance of 2.687 (2) Å shows the five‐atom system to be conjugated. The molecules pack as a two‐dimensional network in the (010) plane through short intermolecular S?O [2.900 (2) and 3.077 (2) Å] interactions. 相似文献
92.
S. Shanmuga Sundara Raj Bohari M. Yamin Yusrabbil A. Yussof M. T. H. Tarafder Hoong‐Kun Fun K. A. Grouse 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):1236-1237
In the crystal structure of the title compound, C8H10N2S2, the molecules are linked by N—H?S hydrogen bonds between the imino group and the thione‐S atoms to form a chain along the b axis. The dithiocarbazate moiety is rotated by 85.8 (2)° with respect to the phenyl ring. 相似文献
93.
Differentkindsofcopper(II)carboxylateadductshavebeensynthesizedandalsodinuclearcopper(Il)complexeshavebeenearlystUdiedasusefulmodelstoestablishmagneto-structUra1correlationsforspinexchangebetWeenmetalions.CostaIshowedthestructureof[Cu,(ll-OOCFc),(bpy),(ClO')(CH,Oand[Cu,(n-OOCFc),(bpy)(CH,OH),]' .Asfarasweknow,thecopper(II)compoundscontainingFCAandphenhavenotbeenreported.TheligandofFCAwassynthesizedaccordingtothefoIlowingscheme2.3:Asolutioncontainingl98mg(lmmol)ofphenandl5mLofmet… 相似文献
94.
Ying‐Hong Lu Hoong‐Kun Fun Suchada Chantrapromma Ibrahim Abdul Razak Zhen Shen Jing‐Lin Zuo Xiao‐Zeng You 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):911-913
The title dinuclear di‐μ‐oxo‐bis[(1,4,8,11‐tetraazacyclotetradecane‐κ4N)manganese(III,IV)] diperchlorate nitrate complex, [Mn2O2(C10H24N4)2](ClO4)2(NO3) or [(cyclam)MnO]2(ClO4)2(NO3), was self‐assembled by the reaction of Mn2+ with 1,4,8,11‐tetraazacyclotetradecane in aqueous media. The structure of this compound consists of a centrosymmetric binuclear [(cyclam)MnO]3+ unit, two perchlorate anions and one nitrate anion. While the low‐temperature electron paramagnetic resonance spectra show a typical 16‐line signal for a di‐μ‐oxo MnIII/MnIV dimer, the magnetic susceptibility studies also confirm a characteristic antiferromagnetic coupling between the electronic spins of the MnIV and MnIII ions. 相似文献
95.
R. Sankaranarayanan D. Velmurugan S. Shanmuga Sundara Raj Hoong‐Kun Fun S. Narasinga Rao S. Kannadasan P. C. Srinivasan 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):569-571
In the title compound, 2‐[(methylphenylamino)methyl]‐1‐(phenylsulfonyl)indole, C22H20N2O2S, the indole system is not strictly planar and the dihedral angle between the fused rings is 2.7 (1)°. The angles around the S atom of the sulfonyl substituent deviate significantly from the ideal value for tetrahedral geometry. The pyramidalization at the indole N atom is very small. Of the two C—H?O interactions, one influences the orientation of indole with respect to the sulfonyl group and the other determines the orientation of the phenyl bound to sulfonyl. The phenyl ring of the sulfonyl substituent makes a dihedral angle of 89.6 (1)° with the best plane of the indole. The molecular packing is stabilized by C—H?π and C—H?O hydrogen bonds. 相似文献
96.
R. Sankaranarayanan D. Velmurugan S. Shanmuga Sundara Raj Hoong‐Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):726-727
In the title compound, C29H30N6O, the naphthyridine moiety is planar with a dihedral angle between the fused rings of 1.9 (1)°. The phenol ring is nearly coplanar, while the diethylaminophenyl substituent is orthogonal to the central naphthyridine ring and the pyrrolidine ring makes an angle of 11.2 (1)° with it. The O atom of the hydroxy substituent is coplanar with the phenyl ring to which it is attached. The molecular structure is stabilized by a C—H?N‐type intramolecular hydrogen bond and the packing is stabilized by intermolecular C—H?π, O—H?N and N—H?O hydrogen bonds. 相似文献
97.
Mehmet Akkurt Sema
ztürk Hakan Üngren Mustafa Samac Hoong‐Kun Fun Yunus Akamur 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(10):o598-o600
The title compound, C24H25NO7, is a racemic mixture of 2,3‐dihydro‐1H‐pyrrol‐3‐ones. It crystallizes in the triclinic system, space group P1, with Z = 2. The asymmetric unit contains two enantiomorphic molecules and the structure is stabilized by hydrogen‐bond contacts. 相似文献
98.
Tushar S. Basu Baul Dr. Pradip Das Xueqing Song George Eng Ching Kheng Quah Hoong‐Kun Fun 《无机化学与普通化学杂志》2010,636(5):851-856
99.
100.
Hossein Imanieh Shahriar Ghammamy Mir Mohammad Alavi Nikje Farhang Hosseini Zahra Shokri Aghbolagh Hoong‐Kun Fun Hamid Reza Khavasi Reza Kia 《Helvetica chimica acta》2011,94(12):2248-2255
Benzyl(triphenyl)phosphonium dichloroiodate (BTPPICl2), BnPh3P+(ICl2)?, is easily synthesized in a nearly quantitative yield by the addition of BnPh3P+Cl? to a CH2Cl2 solution of iodine monochloride (ICl). BnPh3P+Cl? can be prepared by the reaction of Ph3P and BnCl. The compound was characterized by physicochemical and spectroscopic methods (elemental analysis, FT‐IR, and 1H‐NMR). The use of phosphonium counterion improves the quality of the BTPPICl2 crystals. BTPPICl2 crystallizes in the monoclinic system, and its crystal and molecular structure has been determined at 100(1) K by X‐ray diffraction. The structure was solved by the direct method and had refined R value of 0.0637 for 699 reflections (I>2σ(I)), space group P21/n with a=12.4700(3), b=13.2196(3), c=14.4580(3) Å, β=102.6340(10)°, V=2325.67(9) Å3, and Z=4. The I‐atom is coordinated by two Cl‐atoms as ligands in a linear geometry. This compound is a versatile reagent for the efficient and selective iodination of organic substrates, in particular of aromatic phenols to the corresponding iodo compounds, under mild conditions. To assess the generality of method, a wide variety of phenols with electron‐donating and electron‐withdrawing substituents were studied. BTPPICl2 is a mild iodination reagent, which offers a new avenue for an expeditious iodination of phenols. The inexpensive, relatively non‐toxic reagent, and mild conditions are the positive features of the procedure and reagent. 相似文献