This twenty-three-fold drop in conductivity at the melting-point is ascribed to a transformation from an ionic solid to a liquid which consists predominantly of dimeric Ga 2Br 6 molecules. Gallium trichloride (m.p. 77·75°) behaves similarly, the conductivity decreasing nine-fold from 15 ×...
It is well known that N- and O-donor are the Lewis hard bases, which coordinate with Ln(III) and An(III) through typically electrostatic interaction, although some covalent components exist in the ionic bonds relating to N-donors [ 3, 4]. Consequently, a positive relationship should occur ...
structure and spectroscopic properties of the actinides, but the ionic versus covalent nature of metal-ligand bonding in actinide complexes remains controversial. The tetrakis 2,6-di-tert-butylphenoxide complexes of Th, U and Np form an isostructural series of crystal structures containing approximatel...
4). Currently the precise nature of SOD2-reactive versus SOD2-inert iron is unknown but may reflect changes in oxidation state or ligand complexes of the metal. It is unlikely that free ionic manganese and iron serve as the source of metal for SOD2, but rather the metals exist as ...
element” [103]. The receptor acts upon a biochemical mechanism, while the transducer can be diverse in nature, e.g. a chemically modified electrode of electronic conducting, semiconducting or ionic conducting material, plasmon-generating, magnetoresistive or interferometer set-up, and is in direct...
DFT self–consistent calculations were deemed converged when every element of the Hamiltonian matrix and the density matrix were converged to less than 10–4a.u. The transmission spectra were calculated using the Green’s function methods. The gate voltage was considered by self-consistently solving ...
Ionic compounds are similar to covalent bonds, but differ in terms of how the electrons of the two atoms interact. Ionic compounds a formally defined as a grouping of atoms of more than one element connected through ionic bonds. In a covalent (molecular) bond, the electrons are shared, where...
In phase $A$, ${ ext{B}}_{80}$ clusters are significantly distorted and two or four intercluster covalent bonds are formed for ${ ext{K}}_{3}{ ext{B}}_{80}$ or ${ ext{Mg}}_{3}{ ext{B}}_{80}$, respectively. In phase $B$, ${ ext{B}}_{80}$ units are slightly ...
The cause of ferromagnetism has been attributed to the presence of spin–orbital coupling, wherein the spin of the electron gets coupled with the orbital angular momentum which in turn interacts with the ionic core of the atom [1,2]. These atoms possessing their net magnetic moments form magne...
Theoretically, finite-element analysis simulation was performed to explore the fracture features of the AFH along different directions (Fig.4hand Supplementary Movie2). Before stretching, precut cracks were introduced in the L and R directions of the AFH. The inherently aligned fibrous architecture en...