نتایج جستجو برای: 2 and cl
تعداد نتایج: 17226726 فیلتر نتایج به سال:
the catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [pd{c6h2(ch2nh2-(ome)2,3,4}(µ-cl)]2)2) and [pd{c6h2(ch2nh2-(ome)2,3,4}cl(pph3)](3), was investigated in heck cross-coupling reaction. these complexes are more active and efficient catalysts for heck cross-coupling reaction. the palladium complexes 2 and 3 is employed in the heck cross-coupling reaction between styrene a...
The catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [Pd{C6H2(CH2NH2-(OMe)2,3,4}(µ-Cl)]2)2) and [Pd{C6H2(CH2NH2-(OMe)2,3,4}Cl(PPh3)](3), was investigated in Heck cross-coupling reaction. These complexes are more active and efficient catalysts for Heck cross-coupling reaction. The palladium complexes 2 and 3 is employed in the Heck cross-coupling reaction between styrene a...
زمینه و هدف:missing یک یا چند دندان یکی از شایع ترین آنومالی های تکاملی است. روند تکامل سیستم دندانی انسان به سمت کاهش تعداد دندان ها می رود و در این بین missing دندان مولر سوم به دلیل تنوع آن در نژادهای مختلف موضوع جالبی برای دندانپزشکان و محققان ژنتیک می باشد. از طرفی بررسی ارتباط و تأثیر دو جانبه missing مولر سوم با روابط فکی حائز اهمیت می باشد. هدف این مطالعه بررسی و مقایسه میزان missing م...
to study the existence of clostridium septicum as probable agent associated with currently occurrence of black quarter in urmia area, sheep-dung samples were collected. the bacteriological examinations on suspicious gram positive anaerobic spore-bearing bacilli which are in clostridia genus include isolation and biochemical identification were performed. the results showed 28 different types of...
در این رساله، چهار کمپلکس پلی¬پیریدیلی جدید از مس(ii) با فرمول¬های [cu(tptz)(dppz)](pf6)2، [cu(tpy)(dppz)](pf6)2، [{cu(tppz)cl}2(?-cl)](pf6)?toluene و [cu2(?-cl)2(?-tppz)]n(pf6)2n سنتز و شناسایی شدند که در ترکیب آنها tptz = 2، 4، 6- تریس(2- پیریدیل)- 1، 3، 5- تری آزین، dppz = دی¬پیریدو[3، 2-a:2، 3-c]فنازین، tpy = 2، 2: 6، 2- ترپیریدین و tppz = 2، 3، 5، 6- تتراکیس(2- پیریدیل)پیرازین است. همچنین ...
In this protocol, 3-(2-carboxybenzoyl)-1-methyl-1H-imidazol-3-ium chloride [Cbmim]Cl and sulfonic acid functionalized pyridinium chloride [pyridine-SO3H]Cl as a new, reusable, and green Brønsted acidic ionic liquid (BAIL) catalyst were synthesized and successfully used for the one-pot ring opening of epoxide with sodium azide (NaN3) in water at room temperature. Epoxides under ring-opening easi...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
To study the existence of Clostridium septicum as probable agent associated with currently occurrence of black quarter in Urmia area, sheep-dung samples were collected. The bacteriological examinations on suspicious gram positive anaerobic spore-bearing bacilli which are in Clostridia genus include isolation and biochemical identification were performed. The results showed 28 different types ...
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