The nature of the coordination bond in metal complexes of substituted pyridine derivatives. V. 4-Methylpyridine complexes of Zn(II), Cd(II), and Hg(II)

1970 ◽  
Vol 48 (24) ◽  
pp. 3786-3789 ◽  
Author(s):  
M. C. Sears ◽  
W. V. F. Brooks ◽  
D. G. Brewer
Keyword(s):  
Force Field ◽  
Metal Complexes ◽  
Field Model ◽  
Coordination Bond ◽  
Pyridine Derivatives ◽  
Divalent Ions ◽  
Normal Coordinate ◽  
Valence Force ◽  
Valence Force Field ◽  
Zinc Cadmium

In this paper, an attempt is made to interpret the π-bonding between a 4-methylpyridine ligand and the divalent ions of zinc, cadmium, and mercury, using the previously introduced Rπ parameter. To do this, the ν12 mode in the complexes is assigned and confirmed by a normal coordinate analysis based on a valence force field model.

scholarly journals Enhanced valence force field model for the lattice properties of gallium arsenide

2011 ◽  
Vol 84 (15) ◽  
Author(s):  
Sebastian Steiger ◽  
Mehdi Salmani-Jelodar ◽  
Denis Areshkin ◽  
Abhijeet Paul ◽  
Tillmann Kubis ◽  
...  
Keyword(s):  
Gallium Arsenide ◽  
Force Field ◽  
Field Model ◽  
Valence Force ◽  
Valence Force Field

scholarly journals Valence-force model and nanomechanics of single-layer phosphorene

2016 ◽  
Vol 18 (33) ◽  
pp. 23312-23319 ◽  
Author(s):  
Daniel Midtvedt ◽  
Alexander Croy
Keyword(s):  
Force Field ◽  
Continuum Model ◽  
Field Model ◽  
Single Layer ◽  
Force Model ◽  
Valence Force ◽  
Valence Force Field

An improved valence force field model and continuum model for phosphorene enables modeling of macroscopic phosphorene structures.

The nature of the coordination bond in metal complexes of substituted pyridine derivatives. III. 4-Methylpyridine complexes of some divalent transition metal ions

1968 ◽  
Vol 46 (20) ◽  
pp. 3137-3141 ◽  
Author(s):  
D. G. Brewer ◽  
P. T. T. Wong ◽  
M. C. Sears
Keyword(s):  
Infrared Spectroscopy ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Ions ◽  
Coordination Bond ◽  
Pyridine Derivatives ◽  
Normal Coordinate ◽  
Substituted Pyridines ◽  
Solid Complexes ◽  
Nitrogen Bond

Previous papers in this series investigated the nature of the coordination bond in copper(II) and zinc(II) complexes of 4-substituted pyridines by infrared spectroscopy. In this paper, the investigation has been extended to complexes of 4-methylpyridine with cobalt(II), manganese(II), and nickel(II). The geometry of the solid complexes is assigned, and the force constants associated with the metal–nitrogen bond were calculated from a normal coordinate analysis. The validity of the previously introduced Rπ parameter in these systems is discussed.

Lattice Dynamics of Black Phosphorus. I. Valence Force Field Model

1986 ◽  
Vol 55 (4) ◽  
pp. 1213-1223 ◽  
Author(s):  
Chioko Kaneta ◽  
Hiroshi Katayama-Yoshida ◽  
Akira Morita
Keyword(s):  
Force Field ◽  
Lattice Dynamics ◽  
Field Model ◽  
Black Phosphorus ◽  
Valence Force ◽  
Valence Force Field

Vibrational Spectra and Normal Coordinate Calculations of Chlorophosphazene Compounds. III. Polydichlorophosphazene

1982 ◽  
Vol 36 (3) ◽  
pp. 277-281 ◽  
Author(s):  
M. M. Coleman ◽  
J. Zarian ◽  
P. C. Painter
Keyword(s):  
Force Field ◽  
Vibrational Spectra ◽  
Reasonable Agreement ◽  
Normal Modes ◽  
Normal Coordinate ◽  
Valence Force ◽  
Valence Force Field

Vibrational spectra and normal coordinate calculations of polydichlorophosphazene (PDP) are presented. The valence force field derived previously from the two conformers of octachlorocyclotetraphosphazene was directly transferred to a distorted “cis-plan” helical model of PDP without refinement. A reasonable agreement between the observed and calculated frequencies was obtained and the assignment of the normal modes of PDP is discussed.

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