نتایج جستجو برای: amine framework

تعداد نتایج: 482339  

2011
Mohammad Kazem Rofouei Zahra Ghalami Jafar Attar Gharamaleki Giuseppe Bruno Hadi Amiri Rudbari

The title compound, C(13)H(12)ClN(3)O, exhibits a trans geometry about the N=N double bond in the solid state. The dihedral angle between the rings is 22.20 (8)°. Inter-molecular N-H⋯O hydrogen bonds between the amine and meth-oxy groups lead to the formation of a chain-like polymer along the c axis with a C(6) graph set. There is also weak non-classical C-H⋯N hydrogen bonds involving an aromat...

Journal: :Organic Process Research & Development 2023

In situ generated, transient sodium monohydroxyborohydride readily reacts with a present amine to form amine-borane adducts in ethyl acetate at room temperature. Synthesis of heteroaromatic pyridine-, 2-picoline-, and 5-ethyl-2-methylpyridine-boranes, those relevant large-scale reductive aminations, has been demonstrated 100 mmol scale, pyridine-borane 1.1 mole scale. This first report substitu...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
Maria R D'Orsogna Tom Chou

We present a lattice model for helicity induction on an optically inactive polymer due to the adsorption of exogenous chiral amine molecules. The system is mapped onto a one-dimensional Ising model characterized by an on-site polymer helicity variable and an amine occupancy one. The equilibrium properties are analyzed in the limits of strong coupling between helicity induction and amine adsorpt...

2013
David K. Geiger Dylan E. Parsons

The non-H atoms in the structure of the title mol-ecule, C7H7N3, are almost coplanar (r.m.s. deviation = 0.018 Å). The two amine groups each donate two and accept one weak N-H⋯N hydrogen bonds. N-H⋯N hydrogen bonding between the amine and nitrile groups results in chains parallel to [101] in the crystal structure. The chains are cross-linked by N-H⋯N hydrogen bonds between amine groups, giving ...

Journal: :Dalton transactions 2013
Aurore Thibon Lydia Karmazin-Brelot Dominique Mandon

We report in this communication the facile synthesis of the new tris(thiazolylmethyl)amine TTA ligand and the full characterization in solution and in the solid state of two ferrous complexes, [(TTA)FeCl2] and [(TTA)Fe(OTf)2]. TTA, the first example of a simple tris(thiazolemethyl)amine chelate--the second one only within this class of tripods--exerts a weak ligand field and the tertiary amine ...

2016
Kui Tan Sebastian Zuluaga Erika Fuentes Eric C. Mattson Jean-François Veyan Hao Wang Jing Li Timo Thonhauser Yves J. Chabal

The main challenge for gas storage and separation in nanoporous materials is that many molecules of interest adsorb too weakly to be effectively retained. Instead of synthetically modifying the internal surface structure of the entire bulk-as is typically done to enhance adsorption-here we show that post exposure of a prototypical porous metal-organic framework to ethylenediamine can effectivel...

Journal: :Inorganic chemistry 2010
David Britt Chain Lee Fernando J Uribe-Romo Hiroyasu Furukawa Omar M Yaghi

Two new metal-organic framework (MOF) structures, IRMOF-3b and -3c, were prepared by ring-opening reaction of 1,3-propanesultone and 2-methylaziridine with an amine functionalized MOF, IRMOF-3. The new structures are permanently functionalized with covalently linked sulfonate and alkyamine units, respectively. The underlying framework structure is retained after reaction as confirmed by powder ...

2007
Thomas Hahn Walter Frank

SINGLE CRYSTALS OF THE NEW TITLE COMPOUND [SYSTEMATIC NAME: 1,4,7,10-tetra-zoniadecane hexa-chloridorhodate(III) chloride], [H(3)N(CH(2))(2)NH(2)(CH(2))(2)NH(2)(CH(2))(2)NH(3)][RhCl(6)]Cl, were obtained from the corresponding amine and rhodium trichloride in hydro-chloric acid solution by slow crystallization under diffusion-controlled conditions at room temperature. Its solid-state structure i...

Journal: :Fluid Phase Equilibria 2023

A significant effort is under way to identify improved solvents for carbon dioxide (CO 2 ) capture by chemisorption. We develop a predictive framework that applicable aqueous solvent + CO mixtures containing cyclic amines, alkyl polyamines and alkanolamines. number of the studied exhibit liquid-liquid phase separation, behaviour has shown promise in reducing energetic cost capture. The proposed...

Journal: :Energy and Environmental Science 2022

We demonstrate Ni–N/C is an effective electrocatalyst for the direct conversion of captured CO 2 in monoethanol amine-based aqueous absorbents showing high faradaic efficiency (78%) and its selectivity maintained various amine solvents.

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