scholarly journals The Simplified Method for Calculating the Number of Valence Shell Electron Pairs and Application of the VSEPR Theory

Daxue Huaxue ◽  
2021 ◽  
Vol 0 (0) ◽  
pp. 2107112-0
Author(s):  
Wei Zhang ◽  
Li Ma ◽  
Shaoai Xie ◽  
Yuling Wang ◽  
Hongjin Chen
Keyword(s):  
Valence Shell ◽  
Electron Pairs ◽  
Shell Electron ◽  
Simplified Method

The role of non-bonding electron pairs in the asymmetric coordination environments of 1,1-dithiolate complexes

1976 ◽  
Vol 29 (11) ◽  
pp. 2541 ◽  
Author(s):  
BF Hoskins ◽  
CD Pannan
Keyword(s):  
Electron Pair ◽  
Central Atom ◽  
Main Group ◽  
Valence Shell ◽  
Electron Pairs ◽  
Shell Electron ◽  
Dithiolate Complexes ◽  
Asymmetric Coordination ◽  
Bonding Electron

Various forms of asymmetry in the lengths of the bond between the central atom and sulphur, found in differing coordination environments of 1,1-dithiolate compounds involving main group atoms, have been successfully rationalized by considering both the valence shell electron pair repulsion theory and the effect of the restricted ligand bite distance.

scholarly journals Thermal degradation behaviour of some polydithiooxamide metal complexes

2006 ◽  
Vol 31 (1) ◽  
pp. 45-52 ◽  
Author(s):  
H. Al-Maydama ◽  
A. El-Shekeil ◽  
M. A. Khalid ◽  
A. Al-Karbouly
Keyword(s):  
Thermal Decomposition ◽  
Thermogravimetric Analysis ◽  
Integral Method ◽  
Valence Shell ◽  
Degradation Behaviour ◽  
Thermal Stabilities ◽  
Electron Pairs ◽  
Thermal Decomposition Behavior ◽  
The Difference ◽  
Decomposition Behavior

The thermal decomposition behavior of the Fe(II), Co(II), Ni(II) and Zn(II) complexes of polydithiooxamide has been investigated by thermogravimetric analysis (TGA) at a heating rate of 20°C min-1 under nitrogen. The Coats-Redfern integral method is used to evaluate the kinetic parameters for the successive steps in the decomposition sequence observed in the TGA curves. The processes of thermal decomposition taking place in the four complexes are studied comparatively as the TGA curves indicate the difference in the thermal decomposition behavior of these complexes. The thermal stabilities of these complexes are discussed in terms of repulsion among electron pairs in the valence shell of the central ion and electronegativity effects.

scholarly journals Valence‐Shell Electron‐Pair Repulsion Theory Revisited: An Explanation for Core Polarization

2019 ◽  
Vol 25 (46) ◽  
pp. 10938-10945 ◽  
Author(s):  
Julen Munárriz ◽  
Mónica Calatayud ◽  
Julia Contreras‐García
Keyword(s):  
Electron Pair ◽  
Valence Shell ◽  
Core Polarization ◽  
Shell Electron

Investigation of the basis of the valence shell electron pair repulsion model by ab initio calculation of geometry variations in a series of tetrahedral and related molecules

1979 ◽  
Vol 101 (8) ◽  
pp. 2002-2010 ◽  
Author(s):  
Ann Schmiedekamp ◽  
D. W. J. Cruickshank ◽  
Steen Skaarup ◽  
Peter Pulay ◽  
Istvan Hargittai ◽  
...  
Keyword(s):  
Ab Initio ◽  
Ab Initio Calculation ◽  
Electron Pair ◽  
Valence Shell ◽  
Shell Electron
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