نتایج جستجو برای: alkali metal cation

تعداد نتایج: 260304  

2016
Om Prakash Gupta

In the present study we have synthesized new binuclear complexes of alkali and alkaline earth metal salts with interaction of stable metal chelates of isonitrosopropiophenone of Ni(II) & Cu(II) having general formula [Ma(INPP)2.MbL] and [Ma(INPP)2.MbX] for alkali metal adducts and [ Ma(INPP)2.MbL2] and [ Ma(INPP)2.MbX2] for alkaline earth metal adducts where Ma=Ni (II) or Cu(II) and Mb =Li+ , N...

Journal: :Zeitschrift für anorganische und allgemeine Chemie 2021

Selective alkaline and earth metal ion encapsulation by two different Lehn-type cryptands, noted as [3.2.1] [4.1.1], was predicted between them compared on the DFT (B3LYP/LANL2DZp) basis set. Since these cryptands are isomers to well-known [2.2.2] cryptand, cation selectivity of all three cages were compared. The ability host adjust their structure successfully accommodate ions, based energy ge...

2013
A. Ramesh F. Ren P. R. Berger P. Casal A. Theiss S. Gupta S. C. Lee

In vivo biosensing requires stable transistor operation in high-salt concentration bodily fluids while exhibiting impermeability to mobile alkali ions that would otherwise render the metal-oxide-semiconductor (MOS) threshold voltage to drift. Metal oxide semiconductor capacitor structures using Al2O3 as the gate dielectric were soaked in a sterile physiological buffer solution (PBS) up to 24 ho...

2003
Sia Nemat-Nasser Yongxian Wu

An ionic polymer-metal composite (IPMC) consisting of a thin perfluorinated ionomer (usually, Nafion or Flemion) strip, platinum and/or gold plated on both faces, undergoes large bending motion when a small electric field is applied across its thickness. When the same membrane is suddenly bent, a small electric potential of the order of millivolts is produced across its surfaces. This actuation...

Journal: :Genetics 2013
Martha S Cyert Caroline C Philpott

All living organisms require nutrient minerals for growth and have developed mechanisms to acquire, utilize, and store nutrient minerals effectively. In the aqueous cellular environment, these elements exist as charged ions that, together with protons and hydroxide ions, facilitate biochemical reactions and establish the electrochemical gradients across membranes that drive cellular processes s...

1999
Daniel R. Evans Nathanael L. P. Fackler Zuowei Xie Clifton E. F. Rickard Peter D. W. Boyd Christopher A. Reed

Benzene, toluene, p-xylene, and [60]fullerene are shown to be weak ligands to a hard metal such as iron(III) in Fe(TPP)+ cation (TPP ) tetraphenylporphyrinate). X-ray crystal structures of [Fe(TPP)(C6H6)][CB11H6Br6]‚3.5C6H6 (1), [Fe(TPP)(C7H8)][CB11H6Cl6]‚2C7H8 (2), [Fe(TPP)(C8H10)][Ag(CB11H6Br6)2]‚ arene (3), and [Fe(TPP)(C60)][F20-BPh4]‚2.5dichlorobenzene (4) show distinctively short Fe‚‚‚C c...

2004
Yongxian Wu Sia Nemat-Nasser

Ionic Polymer-metal Composites (IPMCs) are soft actuators and sensors. They generally consist of a thin perfluorinated ionomer membrane, metal electrodes plated on both faces, and are neutralized with certain counter cations, balancing the charge of the anions covalently fixed to the membrane. Under a suddenly applied step function (1 to 3 V), the IPMC in alkali-metal cation forms exhibits a fa...

Journal: :physical chemistry research 2014
ali haidar pakiari maryam farrokhnia

in the present study, the interactions of three different lithium species li+, li3+ and ch3li with several different sites of the most stable tautomers of dna nucleo-bases are presented. this investigation is based on the results of thermochemical properties, quantum theory of atoms in molecules (qtaim) and natural bond orbital (nbo) analysis, obtained at b3lyp/6-311++g(d,p) level of theory. th...

Journal: :Journal of Molecular Structure 2022

• The salts with protonated bipyridines and [W(CN) 6 (bpy)] 2- were synthesized. layered structure of compared to their analogues alkali metal cations. dimethyl substituted bipyridine as a cation shows 3D dimensionality. cation-anion distance was discussed in relation position the UV-Vis bands. ion-pair-charge-transfer transitions these found 8 ] 4− analogues. series 2− 2,2′-bpy (1), 4,4′-bpy (...

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