نتایج جستجو برای: pdcl2

تعداد نتایج: 260  

ژورنال: شیمی کاربردی 2020

کمپلکس‌های فلزات واسطه فسفینی به دلیل کاربرد بالقوه‌شان در تهیه ترکیبات آلی، کاتالیست ها، طراحی داروهای جدید ضد تومور و ضدویروسی و ضد باکتریایی در سال های اخیر توجهات زیادی را به خود جلب کرده اند. در این پژوهش، دو ایلید نامتقارن با فرمول عمومی (n = 1 (Y1), 2 (Y2)) [Ph2P(CH2)nPPh2CHC(O)C6H4(m-NO2)] به ترتیب از واکنش 2-برومو3-نیترو استوفنون با 1و2-بیس(دی‌فنیل‌فسفینو)متان (dppm) و 1و2-بیس(دی‌فنیل...

Journal: :Molecules 2014
Mengping Guo Shiwen Liu Xiuling Zhou Meiyun Lv Sanbao Chen Daoan Xiao

A study on room temperature Suzuki cross-coupling in an aqueous medium was carried out using a simple hydrophilic palladium (II) complex, trans-PdCl2(NH2CH2COOH)2 as catalyst in the presence of K2CO3 in air. This approach with a comparatively inexpensive and hydrophilic catalyst, mild reaction condition and aqueous media exhibits excellent catalytic activity towards the Suzuki coupling of aryl ...

2013
Abdessamad Grirrane Hermenegildo Garcia Eleuterio Álvarez

In the context of palladium-catalyzed guanylation of anilines herein, we have been able to characterize and isolate bis(anilino) and bis(guanidino)Pd(II) complexes using reaction conditions under which stoichiometric amounts of palladium salts are used. Characterization of these palladium complexes strongly supports a mechanistic proposal for the catalytic guanylation of anilines using PdCl2(NC...

Journal: :Inorganic chemistry 2006
Stefan Deeken Günter Motz Viktor Bezugly Horst Borrmann Frank R Wagner Rhett Kempe

Stoichiometric-deficient lithiation of (2,6-diisopropylphenyl)(4-methylpyridin-2-yl)amine and reaction with [(cod)PdCl2] (cod = 1,5-cyclooctadiene) yield a dimeric Pd complex. X-ray structural analysis of this complex reveals a very short Pd-Pd distance (2.429 A). Topological analysis of the electron density and the electron localization function from scalar relativistic density functional theo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ایلام - دانشکده علوم پایه 1390

در این پروژه ابتدا فسفین لیگاند: بنزیل ]2-(دی فنیل فسفینو) اتیل[ دی فنیل فسفونیوم بروماید [ph2pch2ch2p(ch2ph)ph][br] تهیه و سپس کمپلکس های پلاتین و پالادیوم فسفینی با فرمول های شیمیایی،[pdcl2([ph2pch2ch2p(ch2ph)ph][br])2]و[ptcl2([ph2pch2ch2p(ch2ph)ph][br])2] سنتز شدند. فسفین لیگاند [ph2pch2ch2p(ch2ph)ph][br] از واکنش 1و2-بیس (دی فنیل فسفینو)اتان [ph2pch2ch2pph2] و بنزیل برماید (phch2br) تهیه ش...

Journal: :Journal of inorganic biochemistry 1999
A I Matesanz J M Pérez P Navarro J M Moreno E Colacio P Souza

The preparation of palladium(II) complexes of 3,5-diacyl-1,2,4-triazole bis(thiosemicarbazone) (H2L2), 2,6-diacylpyridine bis(thiosemicarbazone) (H2L3) and benzyl bis(thiosemicarbazone) (H2L4) is described. The new complexes [PdCl2(H2L2)] (1), [PdCl2(H2L3)] (2) and [PdL4].DMF (3) have been characterized by elemental analyses and spectroscopic studies (IR, 1H NMR and UV-Vis). The crystal and mol...

2014
Gilles Scheen Margherita Bassu Antoine Douchamps Chao Zhang Marc Debliquy Laurent A Francis

We present an original two-step method for the deposition via precipitation of Pd nanoparticles into macroporous silicon. The method consists in immersing a macroporous silicon sample in a PdCl2/DMSO solution and then in annealing the sample at a high temperature. The impact of composition and concentration of the solution and annealing time on the nanoparticle characteristics is investigated. ...

Journal: :Catalysts 2023

The dichotomy between metal–organic frameworks (MOFs) and cages (MOCs) opens up the research spectrum of two fields which, despite having similarities, both have their advantages disadvantages. Due to fact that they cavities inside, also applicability in porosity sector. Bloch coworkers within this evolution from MOFs MOCs manage describe a MOC with structure Cu2 paddlewheel Cu4L4 (L = bis(pyra...

Journal: :Zeitschrift für Kristallographie - New Crystal Structures 1998

1999
Sun Han-Wen

The thermal stabilization characteristics of mercury species (inorganic and organic) in the presence of different chemical modifiers, including PdCl2 + ascorbic acid, (NH4)2PdCl6 + citric acid, (NH4)3RhCl6 + citric acid and a mixture of the last two salts, were investigated. The results indicate that PdCl2 + ascorbic acid can stabilize mercury species upto a temperature of 5008C whereas, with t...

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