Steric effects
Multiple solutions of steady-state Poisson–Nernst–Planck equations with steric effects
... with steric effects (PNP-steric equations) describe steady current through the open channel quite well, in a wide variety of ...to steric effects) associated with these two steady state ...
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Steric Effects of Alkyl Substituents at N-Donor Bidentate Amines Direct the Nuclearity, Bonding and Bridging Modes in Thiocyanato-Copper(II) Complexes
... the steric hindrance imposed by the blocking coligand(s) surrounding the central metal ion ...[11,12]. Steric effects caused by the coordinating blocking ligands in metal complexes have been reported ...
33
Steric effects in lanthanide pyrazolylborate chemistry.
... their steric properties can be varied, they should be ideal ligands for lanthanides for w hich the bonding is generally agreed to be predom inantly ionic and in w hich the steric saturation o f the m etal ...
232
PNP equations with Steric Effects: a Model of Ion Flow through Channels
... Coulomb and steric exclusion forces. If an exclusion zone moved from one side of a channel to another, and then back and forth, the channel protein could easily produce a reciprocating ping pong effect and mimic ...
53
Steric effects on reactivity in some naphthalene derivatives
... The utilisation of increases in ac·tivation energy in the Menschutkin reaction as quantitative measures of eric strains di in the ious section seems capable of ension to steric problems [r] ...
141
Steric effects on the formation constant of metal chelates of beta diketones
... Evidence is presented which indicates that chelating ability may be greatly altered by changing the steric requirements of the ligand. A series of formation constants was measured for three beta-diketones. ...
64
Multiple solutions of steady-state Poisson-Nernst-Planck equations with steric effects
... with steric effects (PNP-steric equations) describe steady current through the open channel quite well, in a wide variety of ...to steric effects) associated with these two steady state ...
27
SPECTROSCOPIC EVIDENCE FOR STERIC ENHANCEMENT OF RESONANCE IN RHODIUM (III) CHLORIDE COMPLEXES
... resonance effects. Three additional effects are very often referred to as proximity effects and have been reported in various ...proximity effects many hypotheses were proposed such as primary ...
23
Poly[ethylenediaminium [di μ aqua (μ6 benzene 1,2,4,5 tetracarboxylato κ10O1,O1′:O2,O2′:O2′:O4,O4′:O5:O5,O5′)dithallium(I)]]
... Evidently, in the case of PbII complexes when the lone pair appears to have no steric effects, the bonds with ligand donor atoms are arranged throughout the surface of encompassing spher[r] ...
8
Substituent, Temperature and Solvent Effects on the Keto Enol EQUILIBRIUM in β Ketoamides: A Nuclear Magnetic Resonance Study
... solvent effects on tautomeric equilibria in several β-ketoamides have been investigated by means of nuclear magnetic resonance spectroscopy ...and steric effects and tautomer stabilization via ...
12
Numerical methods for a Poisson-Nernst-Planck-Fermi model of biological ion channels
... the steric effect of ions and water molecules with different sizes and interstitial voids, the correlation effect of crowded ions with different valences, and the screening effect of polarized water molecules in ...
16
Part I: The Confluence of Steric and Electronic Effects in N-Heterocyclic Carbene-Catalyzed Processes Part II: Studies Toward the Asymmetric Oxidative Coupling of Phenols
... Prior to a discussion of the role of the N 1 -aryl ortho-groups, the steric interactions between each of the transition state conformations must be understood. A key point of flexibility in the catalyst structure ...
253
Determination of protonation constants and structural correlations for some tertiary formamides and acetamides in sulfuric acid with UV spectroscopy
... Protonation constants of weak organic bases are obtained by analyzing the changes of some physical properties of the observed substrates, starting from free towards protonated base, by in- creasing the media acidity. ...
11
Preparation and Properties of Molecules Having High Steric Crowding 1,8 Diphenylnaphthalenes
... Thus, when a five-molar excess of m-chlorophenylmagnesium iodide was added to 1, 8-diiodonaphthalene and NiAcAc 2 at -20° and the reaction mixture hydrolyzed immediately after it was jud[r] ...
223
Steric Stabilising Properties of Hydrophobically Modified Starch: Amylose vs. Amylopectin
... Even if one supposes that the values of DS and the molecular 135 weight of chains are identical, how different would the surface behaviour of the highly 136 branched amylopectin fraction[r] ...
35
Synthesis and characterisation of an N-heterocyclic carbene with spatially-defined steric impact
... Crystal structures for these complexes were obtained to allow the steric profile of the new carbene ligand to be evaluated in different metal centre geometries, and compared with analogues such as IMes, IPr, and ...
9
C60 Bioconjugation with Proteins: Towards a Palette of Carriers for All pH Ranges
... [26]. Steric hindrance and electrostatic repulsion are the key factors determining the stability of the dispersion of carbon nanomaterials-protein complexes in aqueous solutions ...
11
A modular family of phosphine phosphoramidite ligands and their hydroformylation catalysts : steric tuning impacts upon the coordination geometry of trigonal bipyramidal complexes of type [Rh(H)(CO)2(P^P*)]
... direct steric effects between the phosphoramidite part of the ligand and the substrate and not the equatorial-‐axial arrangement of the ligand on the metal; both ligands 1 and 2 primarily or solely form ...
9
A 3D-QSAR study on the antitrypanosomal and
... Steric and electrostatic contour maps representing the CoMFA model for cytotoxic activity on L6 168. rat skeletal myoblasts[r] ...
13
Schizosaccharomyces pombe kinesin 5 switches direction using a steric blocking mechanism
... be due to lower ionic strength favoring increased occupancy of the MT lattice. The dependence of Cin8 directional switching on the sequence of loop 8 (15) and on phosphorylation of the motor domain (16) might have a ...
7