نتایج جستجو برای: Niobapyrimidinium Complex
تعداد نتایج: 783835 فیلتر نتایج به سال:
the structure and properties of niobapyrimidinium complex were examined by density functionaltheory method (mpw1pw91). the effect of solvent on the structural parameters, frontier orbitalenergies and hyperpolarizability (tot) of this molecule has been explored. the thermodynamicproperties of the title compound at different temperatures have been calculated. also, the parasubstitutionseffect on...
The structure and properties of niobapyrimidinium complex were examined by density functionaltheory method (mpw1pw91). The effect of solvent on the structural parameters, frontier orbitalenergies and hyperpolarizability (tot) of this molecule has been explored. The thermodynamicproperties of the title compound at different temperatures have been calculated. Also, the parasubstitutionseffect on ...
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...
determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...
this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...
بتا-سیکلودکسترین ، قادر به تشکیل کمپلکس محاطی inclusion complex)) با شمار زیادی از مولکولها از جمله داروهای کم محلول و ناپایدار و ... است که در نتیجه تشکیل این کمپلکس ، حلالیت و پایداری این داروها افزایش می یابد.
چکیده در این پایان نامه، در ابتدا از واکنش بین پالادیم استات و آلیزارین زرد gg کمپلکس دو هسته ای ارتوپالادیت [pd{? 2(c,n) -{5-(3-nitrophenylazo) salicylic acid}}(µ-oac)]2 (1) ستنز شد. از واکنش این کمپلکس دو هسته ای ارتوپالادیت (1) با لیگاند های تک دندانه تری فنیل فسفین (pph3)، 6،4،2-تری متیل-پیریدین(me3py) کمپلکس های تک هسته ای (2)، (3) سنتز شدند. همچنین از واکنش بین پالادیم استات و آلیزارین ز...
abstract lexical knowledge of complex english words is an important part of language skills and crucial for fluent language use (nation, 2001). the present study, thus, was an attempt to assess the role of morphological decomposition awareness as a vocabulary learning strategy on learners’ productive and receptive recall and recognition of complex english words. so 90 sophomores (female and ma...
ژنوم میتوکندریایی شامل ?? ژن کد کنندهء پروتئین است. بسیاری از این ژن ها زنجیرهء انتقال را کد می کنند.ژن 5nd-mt یکی از 13 ژن کد کننده پروتئین است، که زنجیره انتقال الکترون را کد می کند. و جایگاه آن در(i complex)است. ژن 5nd-mt دستورالعمل برای ساختن یک پروتئین به نام nadh دهیدروژناز5 را فراهم می کند. این پروتئین بخشی از یک مجــتمع آنزیم های بزرگ شناخــــته شده با عنوان (i complex)است که در میتوک...
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