نتایج جستجو برای: br2

تعداد نتایج: 493  

Journal: :The Journal of chemical physics 2005
Y Honda M Hada M Ehara H Nakatsuji J Michl

A theoretical method for calculating magnetic circular dichroism (MCD) of molecules is presented. We examined the numerical accuracy and the stability of the finite perturbation (FP) method and the sum-over-state (SOS) perturbation method. The relativistic effects are shown to be important for the MCD spectra of molecules containing heavy elements. Calculations using the FP and the SOS methods ...

Journal: :Helvetica Chimica Acta 2022

A series of structurally related, acyclic cobalt tetrapyridyl hydrogen evolving catalysts (HEC) were prepared and characterized. The common motif, di(2,2′-bipyridin-6-yl)-methane, was derivatized at the bridging methylene to include a carbonyl group (L1), hydroxy (L2), methyl (L3), 1,1′-biphenyl-2,2′-diyl (L4), phenyl (L5) or pyrid-6-yl group. These compared with known HEC [Co(appy)Br]Br. Photo...

Journal: :Structural Chemistry 2022

The Br2 and Cl2 interaction with the intrinsic Co-doped graphyne nanosheets has been explored by density functional theory calculations. Two vertical parallel configurations were identified for adsorption. Calculations showed that adsorption of was stronger than on nanosheet. Neither nor could make serious changes to HOMO–LUMO gap (Eg) electrical resistance pristine sheet. By manipulating struc...

Journal: :Batteries 2022

Hydrogen-bromine (H2-Br2) redox flow batteries (RFBs) have gained a lot of interest due to their advantages in mitigating the performance shortcomings conventional zinc-bromine and vanadium batteries. Various carbon materials been tested H2-Br2 RFBs as bromine electrodes. However, comparative study among different has not reported literature. This work reports, for first time, an evaluation pap...

ژورنال: :شیمی کاربردی 0
غلام حسین مهدوی نیا gholam hossein mahdavinia department of chemistry, islamic azad university-marvdasht branch, marvdasht, iranگروه شیمی، دانشگاه ازاد اسلامی واحد مرودشت محمد علی بیگدلی mohammad ali bigdeli faculty of chemistry ttarbiat moallem university, 49 mofateh st., tehran, iranدانشکده شیمی، دانشگاه تربیت معلم تهران سمانه کریمی samaneh karimi faculty of chemistry ttarbiat moallem university, 49 mofateh st., tehran, iranدانشکده شیمی، دانشگاه تربیت معلم تهران فاطمه کوتی fatemeh koti faculty of chemistry ttarbiat moallem university, 49 mofateh st., tehran, iranدانشکده شیمی، دانشگاه تربیت معلم تهران

در این مقاله یک روش ساده و کارا برای واکنش تراکمی تک ظرفی بیگینلی آلدهیدها، ترکیبات β-دی کربونیل و اوره یا تیو اوره با استفاده از کمپلکس dabco-br2 به عنوان یک کاتالیز گر جدید توصیف شده است.

Journal: :Zeitschrift für Kristallographie - New Crystal Structures 2003

Journal: :Angewandte Chemie International Edition 2018

Journal: :Journal of Computational Physics 2022

In this work we introduce a DG framework for nonlinear elasticity based on Bassi-Rebay (BR2) formulation. The encompasses compressible and incompressible hyperelastic materials is capable of dealing with large deformations. order to achieve stability, combine higher-order lifting operators the BR2 stabilisation term an adaptive strategy which relies Laplace operator penalty parameter spectrum f...

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