Results 41 to 50 of about 7,593 (247)

The Chirality Chain in Valine: How the Configuration at the Cα Position through the OcisC′CαN Torsional System Leads to Distortion of the Planar Group CαC′(Ocis)Otrans to a Flat Tetrahedron

open access: yesChemistryOpen, 2018
Solid‐state structures, based on a Cambridge Structural Database (CSD) search, show that there is a CαN/C′Ocis attraction in the torsional system OcisC′CαN of valine, causing a chirality chain.
Prof. Dr. Henri Brunner   +1 more
doaj   +1 more source

Structural studies of crystalline forms of triamterene with carboxylic acid, GRAS and API molecules

open access: yesIUCrJ, 2018
Pharmaceutical salt solvates (dimethyl sulfoxide, DMSO) of the drug triamterene with the coformers acetic, succinic, adipic, pimelic, azelaic and nicotinic acid and ibuprofen are prepared by liquid-assisted grinding and solvent-evaporative ...
Abida Rehman   +3 more
doaj   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

open access: yesAdvanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha   +10 more
wiley   +1 more source

Design of low complexity sharp MDFT filter banks with perfect reconstruction using hybrid harmony-gravitational search algorithm

open access: yesEngineering Science and Technology, an International Journal, 2015
The design of low complexity sharp transition width Modified Discrete Fourier Transform (MDFT) filter bank with perfect reconstruction (PR) is proposed in this work.
V. Sakthivel, Elizabeth Elias
doaj   +1 more source

Code and Time Synchronization of the Cell Search Design Influence on W-CDMA Systems

open access: yes, 2006
The large-scale statistics of an improved cell search design (improved CSD) using cyclic codes is compared with the 3GPP cell search design using comma free codes (3GPP-comma free CSD) in terms of acquisition time for different probabilities of false ...
S. Mishra
core   +1 more source

mGluR5 in ECCCK to BLA Circuit Modulates Depressive‐Like Phenotypes through CCK Signaling

open access: yesAdvanced Science, EarlyView.
Dysregulation of mGluR5 and CCK signaling contributes to major depressive disorder, yet circuit‐level mechanisms remain unclear. Here, the ECCCK→BLA pathway is identified as a critical regulator of affective behavior. mGluR5 modulates synaptic function and CCK signaling within this circuit, controlling stress susceptibility and depressive‐like states ...
Muhammad Asim   +4 more
wiley   +1 more source

H2XP:OH2 Complexes: Hydrogen vs. Pnicogen Bonds

open access: yesCrystals, 2016
A search of the Cambridge Structural Database (CSD) was carried out for phosphine-water and arsine-water complexes in which water is either the proton donor in hydrogen-bonded complexes, or the electron-pair donor in pnicogen-bonded complexes.
Ibon Alkorta   +2 more
doaj   +1 more source

Isosteric Substitution Enables Rational Design of Two‐Dimensional Energetic Crystals

open access: yesAdvanced Science, EarlyView.
Isosteric substitution transforms a classical nitro–amine motif into two‐dimensional aminofurazans with performance beyond TATB. ABSTRACT Two‐dimensional (2D) energetic crystals dissipate mechanical insult via interlayer slip, yet their molecular design space remains narrow.
Linyuan Wen   +6 more
wiley   +1 more source

Imidazol-2-ylidene stabilized tetrahedral cobalt carbonyl complexes: A computational and structural database study

open access: yesHeliyon, 2019
A combined crystallographic database and computational chemistry analyses of tetrahedral cobalt (Co) carbonyl (CO) complexes bearing substituted imidazol-2-ylidene (Im) ligands were studied.
Samuel Tetteh
doaj   +1 more source

Radical⋯radical chalcogen bonds: CSD analysis and DFT calculations

open access: yes, 2020
This manuscript reports a combination of crystallographic analysis (Cambridge Structural Database) and theoretical DFT calculations in chalcogen bonding interactions involving radicals in both the Ch bond (ChB) donor and acceptor.
Galmes B.   +4 more
core   +1 more source

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