electronegativity. When theelectronegativitiesof the bonded species are not very different, the bond will be more covalent than ionic. However, when there is a large enoughdifference in the electronegativitiesof the bonded atoms, the bond becomes polar enough to be considered more ionic than ...
Which of the following groups exerts+meffect when attached with benzene ring? View Solution The resonance effect is defined as 'the polarity produced in the molecule by the interaction of twoπ-bonds or between aπ-bond and lone pair of electrons present on an adjacentatom.' The effect is ...
(iv) chemical reactivity parameters like electronegativity (X)33, global softness (σ), ionization potential (IP), electron affinity (EA), hardness (η)34 and electrophilicity index (ω)35; (v) binding energy (Eb); (vi) HOMO–LUMO contributions (DOS) and (vii) NLO properties (μtot, ...
It is also known that fluorine, which is present in PVDF, has a large electronegativity and thus it can be expected that PVDF has a larger ability to gain electrons compared with other macromoleclar polymer materials which can be polarized, such as polymethyl methacrylate (PMMA). Therefore...
on the onset precipitation of asphaltene Raghda A. El‑Nagar 1, Maher I. Nessim 1, Dina A. Ismail 2, Manal G. Mohamed 3 & Alaa Ghanem 4* Precipitation and deposition of asphaltene are considered as catastrophic issues facing the petroleum industry....
However, the presence of the aromatic backbone makes PEEK susceptible to attack from certain classes of solvents, especially those with high polarity or specific functional groups [13], [16]. Several accelerated aging studies have been performed to evaluate the thermal and chemical resistance ...
It is shown that substitution of fluorine and lithium atoms at the naphthalene positions leads to structural changes which strongly depend on the electronegativity of the substituents. The deformations induced are more pronounced in naphthalenedicyclobutadienes. The dominant effect which causes variation ...
structures, natural bond orbital (NBO) properties, electrostatic potential (ESP) and the global properties such as (the chemical hardness (eta), global softness (S), and electronegativity (chi) by analysis of the charge distribution and extent of charge transfer in the molecule in the gas phase...
structures, natural bond orbital (NBO) properties, electrostatic potential (ESP) and the global properties such as (the chemical hardness (η), global softness (S), and electronegativity (χ) by analysis of the charge distribution and extent of charge transfer in the molecule in the gas phase....
The inductive effect seems to be more influenced by the size of the metal atom and possible participation of the d-orbitals in bonding rather than electronegativity of the metal atom.doi:10.1016/0022-1902(73)80283-0Buddhadev SenGregory L. White...