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101.
Masoumeh Zakeri Majid M. Heravi Mina Saeedi Narges Karimi Hossein A. Oskooie Niloofar Tavakoli‐Hoseini 《中国化学》2011,29(7):1441-1445
An efficient one‐pot condensation of β‐naphthol, aldehydes and cyclic 1,3‐dicarbonyl compound has been achieved with ionic liquids as catalyst, thus a variety of 8,9,10,12‐tetrahydrobenzo[a]xanthen‐11‐one derivatives were prepared in good yields. The present approach offers several advantages such as shorter reaction times, good yields and mild reaction conditions. 相似文献
102.
Mohammad T. Baei Ali Reza Soltani Ali Varasteh Moradi Masoumeh Moghimi 《Monatshefte für Chemie / Chemical Monthly》2011,21(6):573-578
Abstract
The behavior of N2O adsorbed on the external surface of H-capped (6,0), (7,0), (8,0), and Al-doped (6,0) zigzag single-walled carbon nanotubes was studied by using density functional calculations. Geometry optimizations were carried out at the B3LYP/6-31G* level of theory using the Gaussian 03 suite of programs. We present the nature of the N2O interaction in selected sites of the nanotubes. Binding energies corresponding to adsorption of the N2O are calculated to be in the range 4–21 kJ mol−1. More efficient binding energies cannot be achieved by increasing the nanotube diameter. We also provide the effects of N2O adsorption on the electronic properties of the nanotubes. 相似文献103.
Poly(4-vinyl pyridine) supported nanoparticle of copper(Ⅰ) iodide is reported as a green and recyclable catalyst for the regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles from benzyl halides,sodium azide and terminal alkynes in water. This catalyst can be recovered by simple filtration and recycled up to 8 consecutive runs without any loss of its efficiency. 相似文献
104.
Tabatabaee M 《Chemistry Central journal》2012,6(1):5
Background
Various water clusters including hexamers, heptamers, octamers, decamers and 1D or 2D infinite water chains in a number of organic and inorganic-organic hybrid hosts, have been reported. 相似文献105.
In this paper, we investigate the existence of unique continuous linear extension for linear correspondences. We also give some results on cosine families of linear correspondences. 相似文献
106.
Sabbaghan Maryam Charkhan Hossein Ghalkhani Masoumeh Beheshtian Javad 《Research on Chemical Intermediates》2019,45(2):487-505
Research on Chemical Intermediates - In this study, an efficient route for graphene oxide (GO) and reduced GO (RGO) synthesis was developed by using an ultrasonic probe and bath alternatively. RGO... 相似文献
107.
Sadjadi Samahe Malmir Masoumeh Pourmohammad Nargess Ahmadi Shervin Heravi Majid M. 《Research on Chemical Intermediates》2019,45(9):4349-4366
Research on Chemical Intermediates - A covalent hybrid of halloysite-poly(methyl methacrylate-co-maleic anhydride) was prepared and applied for the immobilization of Pd nanoparticles. The hybrid... 相似文献
108.
109.
Mitra Ghassemzadeh Mostafa Mohammad Pooramini Maasoomeh Tabatabaee Majid M. Heravid Bernhard Neumüller 《无机化学与普通化学杂志》2004,630(3):403-406
The reaction of copper(I) chloride with 6‐aza‐2‐thiothymine (ATT, 1 ) and triphenylphosphane in methanol/chloroform gives [(ATT)CuCl(PPh3)] ( 2 ) as a neutral complex. [(ATT)Ag(NO3)(PPh3)2]·MeOH ( 3 ) can be obtained by the reaction of 1 with silver(I) nitrate and triphenylphosphane in methanol/chloroform in excellent yields and the single crystals of 3 can be obtained from acetonitril solution. Both complexes were characterized by infrared spectroscopy, elemental analyses as well as by X‐ray diffraction studies. Crystal data for 2 at —80 °C: space group I2/a with a = 1859.3(1), b = 1143.2(1), c = 2208.2(1) pm, β = 104.84(1)°, Z = 8, R1 = 0.0355 and for 3 at —80 °C: space group P21/c with a = 1344.1(1), b = 1553.6(1), c = 1977, 3(3) pm, β = 105.26(1)°, Z = 4, R1 = 0.0436. 相似文献
110.
Masoumeh Hasani Naser Mafakheri 《Russian Journal of Physical Chemistry B, Focus on Physics》2016,10(6):929-934
The interaction of iodine as electron acceptor with nortriptyline and imipramine drugs as electron donors has been investigated spectrophotometrically at various temperatures in chloroform and dichloromethane solutions. The observed time dependence of the charge–transfer band and subsequent formation of in solution were related to the slow transformation of the initially formed iodine: drug outer complex to an inner electron donor–acceptor (EDA) complex, followed by fast reaction of the inner complex with iodine to form a triiodide ion. The pseudo-first-order rate constants and activation parameters for the transformation process were evaluated from the absorbance-time data. Stoichiometrices of the complexes were defined by the Job’s method of the continuos variation and obtaind 2: 1 for iodine: drug complexes. The formation constants and molar absorptivities were evaluated from the absorbance-mole ratio data. Thermodynamic parameters of the complexes have been determined from the temperature dependence of the stability constant by Van’t Hoff equation. 相似文献