2024-03-29T18:27:34Z
https://ijcce.ac.ir/?_action=export&rf=summon&issue=1705
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Preparation and NMR, Mass and Mössbauer Studies of Di-and Triorganotin (IV) Derivatives of 3-(2-Furanyl)-2- Propenoic Acid
Badshah, A
Danish, M.
Saqib Ali
Mazhar, M.
N.
Islam
M.
Iqbal Chaudary
3-(2-Furanyl)-2-propenoic acid has been used to prepare a new series of organotin complexes of general formula R3SnL (R=Me, Et, n-Bu, Ph and Cy) and R2SnL2 (R=Me and n-Bu). These complexes have been characterized by elemental analyses, IR, 1H-NMR, MASS and Mössbaure spectroscopy.
Spectral studies of organotin derivatives of 3-(2-furanyl)-2-propenoic acid
1994
06
01
1
6
https://ijcce.ac.ir/article_10169_cb2fffbdd395e92d9426b758141390a5.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Preparation and Molecular Structure of [CuCl(L)]6; L= 2-(Methylamino)Pyridine
Hossein
Aghabozorg
Sandro
Gambarotta
Corinne
Bensimon
The 2-(methylamino) pyridine, L, reacts with CuCl in THF to give hexameric copper (I) complex, [CuCl(L)]6. The molecular structure has been determined by using single-crystal X-ray diffraction method. The complex crustallizes in the monoclinic space group P21/n with four molecules per unit cell. The unit cell dimensions are a = 8.3495 (15), b = 15.622 (6), and c = 17.030(4) Å with b= 98.55 (2)°. The final R value is 0.062 for 4261 reflections measured. Coordination number around Cu(1) and Cu(3) is four (nearly tetrahedral), but around Cu(2) is three (nearly trigonal). The Cu(2)-Cu(3) bond distance is 2.682 (2)Å.
Preparation
Molecular structure
[CuCl(L)]6
L= 2-(Methylamino) pyridine
1994
06
01
7
12
https://ijcce.ac.ir/article_10386_365875fc1264fa36e9d5ba5e4f313130.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Bromination and Dehydrobromination Studies on Some CIS-4a-Methyl-Decaline-2,7-Diones
Sasanin
Karimi
K.
Grohamann
L.
Todaro
Results of the bromination and dehydrobromination of several angular methylated decalindiones are described. The key reaction, base-induced cyclization of the monobromo keto ester (3), and the dibromo ketone (4), leads to the formation of tricyclic systems (6) and (9) respectively.
Cis-fused decalin
Favorskii
Intermediate
Dehydrohalogenation
Intramolecular cyclization
X-ray Analysis
1994
06
01
13
24
https://ijcce.ac.ir/article_10387_a4f6252d0025055ad1feff9ad9736ee7.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
The Reactive Chemisorption of Carbon Dioxide at Mg(100) Surface
Asghar
Zeini Isfahani
M.W.
Roberts
A.F.
Carley
S.
Read
X-ray photoelectron and electron energy loss spectroscopic (XPS-EELS) studies reveal that the following species are present when a mixture of CO2 and water vapour is exposed to the clean Mg(100) surface at 110K: CO3(a), C(a) CH(a), OH(a). The reactive chemisorptions of CO2 and H2O vapour coadsorbed on a Mg surface leads to the formation of CH bond. Increasing the temperature to 400 K shows the peaks in the C(1s) region of the spectrum disappears suggesting the CH containing species are not stable at 400K.
Coadsorption of CO2 + H2O
Dissociative chemisorptions
X-ray photoelectron spectroscopy
C-H formation
Carbonate species
1994
06
01
25
29
https://ijcce.ac.ir/article_10389_67e700ab14273dded519af390942c9bf.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Raman Study of the Photochemistry of Maleic Acid Adsorbed on the Surface of Colloidal Silver
Jalal
Shakhse Emampour
Jung Sang
Suh
Martin
Moskovits
The surface-enhanced Raman scattering (SERS) spectra of maleic (cis; 2-butaneoic acid) and fumaric (trans; 2-butaneoic acid) acids adsorbed on aqueous silver sol particles are reported. These two acids form two groups of isomers which differ only in the relative positions of the two carboxylate groups. The photochemistry of maleic and fumaric acids adsorbed on the surface of silver colloids is investigated using SERS as a probe. The photochemical studies of these two acids adsorbed on colloidal silver surfaces show that the photoisomerization of maleic to fumaric acid has occurred. We interpret our spectra as indicating that fumaric acid p bounds through a C=C double bond, while maleic acid s bonds through lone pairs on the carboxylate groups.
Raman
Photochemistry
Maleic acid
Adsorption
Colloidal silver
1994
06
01
30
36
https://ijcce.ac.ir/article_10390_a7817e46dead61ed68be11be6b183b21.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Thermal Analysis of Adenosine Deaminase in the Presence of Sodium N-Dodecyl Sulphate
Ali Akbar
Moosavi Movahedi
Hassan
Moghaddamnia
Gholam Hossein
Hakimelahi
The thermal denaturation of adenosine deaminase (ADA) has been investigated in the presence of sodium n-dodecyl sulphate (SDS) over the temperature range of (293-363K) in 2.5 mM phosphate buffer, pH 6.4 by temperature scanning spectroscopy. The interaction of SDS caused the folding of adenosine deaminanse resulting in a decrease of TH (temperature of minimum solubility), TS (temperature of maximum stability), DHVH / DH293 (intermolecular force between hydrophobic parts of adenosine deaminase with water) and other corresponding thermodynamic parameters. The folding of adenosine deaminase by SDS, induced minimum solubility at lower temperatures indicating enhanced apolar interactions in the interior phase resulting in a lower value for TH. In contrast the interaction of ADA with dodecyl trimethylammonium bromide (DTAB) led to the unfolding of the enzyme and a higher value of TH.
Adenosine deaminase
Sodium n-dodecyl sulphate
Thermal denaturation
1994
06
01
37
42
https://ijcce.ac.ir/article_10391_ab64fe37392b1525060f3a715ab2d85f.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
The Direct Electrochemical Investigation of Redox Enzymes
M.D.(Davood)
Nabi Rahni
H.Allen O.
Hill
Even though the use of enzymes as useful analytical reagents when immobilized onto a transducer such as an electrochemical device has been reported in the literature for nearly two decades, the direct, i.e. unmediated electrochemistry of enzymes is, nevertheless, a rather recent development. Efforts will be made to introduce the fundamental basis for protein-surface interactions with emphasis on the powerful technique of cyclic voltammetry. The experimental schemes and ample examples as performed in our laboratory will also be presented to illustrate the kinetic and thermodynamic information acquired based on such enzymatic systems. It is believed that forther acquisition of knowledge in the field combined with findings from other complementary disciplines such as modeling and simulation, instrumental computerization and miniaturization, and on-line adaptability will ultimately pave the way toward the universal acceptance of biosensor and actuators for chemical analysis.
Enzymes
Electrochemical
Protein
Cyclic voltammetry
Kinetics
1994
06
01
43
58
https://ijcce.ac.ir/article_10392_e22e26ed82fbbaccce6973720e5924a1.pdf
Iranian Journal of Chemistry and Chemical Engineering
Iran. J. Chem. Chem. Eng.
1021-9986
1021-9986
1994
13
1
Preparation and Characterisation of Immunoadsorbents for High Performance Liquid Affinity Chromatography (HPLAC)
Seyed Abbas
Shojaosadaty
Andy
Lyddiatt
The efficacy of activation methods and coupling were studied in the context of performance in batch and fixed bed binding experiments utilizing cell culture fluids or blood plasma as feedstock. Conclusions were drawn regarding selection of solid phase according to pore size, rigidity, pH stability, Chemistry of derivation and activation, and gross concentration of immobilized ligand required for optimal performance in analytical and preparative fractionation of complex feedstreams.
Immunoadsorbent
High Performance Liquid Affinity Chromatography (HPLAC)
1994
06
01
59
67
https://ijcce.ac.ir/article_10393_4206b35e5f059889c669e8fca0fbb81d.pdf