covalency


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

covalency

(US), covalence Chemistry
1. the formation and nature of covalent bonds
2. the number of covalent bonds that a particular atom can make with other atoms in forming a molecule
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Mentioned in ?
References in periodicals archive ?
The shape of the spectrum is consistent with octahedral environment around Cu(II) ion and the higher g value for the investigated [Cu(MFMAQ)Cl] complex (Table 5), when compared to that of free electron (g = 2.24) revealing an appreciable covalency of metal ligand bonding with d[x.sup.2]-[y.sup.2] as the ground-state characteristic of octahedral stereochemistry [19].
Using EPR covalency character has been (calculated as 0.74) enhanced between metal and ligand in the compound.
Most (98%) commercial reactive dyes are fixed under alkaline conditions.In order to achive maximum wash fastness of a reactive dyeing, the hydrolysed dye which is present in the fibre and held by weaker affinity forces, than covalency, should be completely removed, as otherwise it would lower the wash fastness of the dyeing because of its lower substantivity to cellulose.
Beside implying a low Poisson ratio, the very high G/B ratio holds implications for several other crystal-bonding properties: covalency, Cauchy-relation departure, many-body forces, and others.
In this study we use semiempirical computational methods to show that taxol can form a octahedral geometry with Fe(III) with bonds on the order of 1.90 to 2.50 Angstroms, suggesting covalency. This is the same geometry and distances found in many known siderophores.
The lowering of the energy of [sup.3]P state is a measure of covalency among other effect which is expressed as Nephelauxetic effect and represented as [[beta].sub.0].
Consequently, the electrons in both bonds must overlap to some degree, indicating that the electron in the hydrogen bond is circulating around two linked atoms--the hallmark of covalency.