Chemical bonding in cuprous complexes with simple nitriles: octet rule and resonance concepts versus quantitative charge-redistribution analysis

2020 ◽  
Vol 22 (36) ◽  
pp. 20238-20247
Author(s):  
Simone Potenti ◽  
Lorenzo Paoloni ◽  
Surajit Nandi ◽  
Marco Fusè ◽  
Vincenzo Barone ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Chemical Bonding ◽  
Charge Redistribution ◽  
Resonance Structures ◽  
Octet Rule

Resonance structures for six cuprous complexes with simple nitriles are interpreted by means of a quantitative analysis of charge redistribution upon copper-nitrile bonding.

Chemical Bonding 1: Basic Concepts

2021 ◽  
pp. 81-101
Author(s):  
Christopher O. Oriakhi
Keyword(s):  
Chemical Bonding ◽  
Chemical Properties ◽  
Lattice Energy ◽  
Bond Polarity ◽  
Formal Charge ◽  
Basic Concepts ◽  
Lewis Structures ◽  
The Relationship ◽  
Octet Rule

Chemical Bonding I: Basic Concepts examines general ideas of chemical bonding between atoms and ions and how this bonding affects the chemical properties of the elements. An overview of Lewis symbols, Lewis structures and the octet rule is presented including the role of valence electrons in ionic and covalent bonding. The energy changes that accompany ionic bond formation are also discussed with emphasis on lattice energy. The chapter covers guidelines and general procedures for writing Lewis structures or electron dot formulas for molecular compounds and polyatomic ions. The concepts and applications of resonance, formal charge and exceptions to the octet rules are presented, along with coverage of the relationship between bond polarity and electronegativity.

Chemical Bonding in Hypervalent Molecules:  Is the Octet Rule Relevant?

2002 ◽  
Vol 41 (8) ◽  
pp. 2164-2172 ◽  
Author(s):  
Stéphane Noury ◽  
Bernard Silvi ◽  
Ronald J. Gillespie
Keyword(s):  
Chemical Bonding ◽  
Hypervalent Molecules ◽  
Octet Rule

The quantitative analysis of electrostatic potential and study of chemical bonding by electron diffraction structure analysis

2003 ◽  
Vol 218 (4) ◽  
Author(s):  
A. S. Avilov
Keyword(s):  
Quantitative Analysis ◽  
Electron Diffraction ◽  
Structure Analysis ◽  
Electrostatic Potential ◽  
Chemical Bonding ◽  
Quantitative Data ◽  
Topological Analysis ◽  
Diffraction Structure ◽  
Academy Of Sciences ◽  
Electron Diffractometry

AbstractThe development of the electron diffractometry methods jointly the analytical methods of electrostatic potential (ESP) reconstruction and its topological analysis allowd one to proceed to the quality new level of electron diffraction structure analysis (EDSA): investigation inner crystalline electrostatic field, which knowledge permitts to study the relation of the atomic structure with physical properties of crystals. The review of the last achivements in this direction, obtained in the Institute of Crystallography of Russian Academy of Sciences, in which EDSA method was discovered, is done. The possibility of the EDSA method to solve precise problems of quantitative analysis of the electrostatic potential is shown on the examples of investigations of the ESP distributions and chemical bonding in crystals with NaCl-type structure and covalent crystal Ge. It is also shown that quantitative data on the potential distribution considerably enlarge conceptions on the nature of interatomic and inetrmolecular interactions in crystals.

CHEMICAL BONDS AND ELECTRONIC STRUCTURES OF THE METHONIUM CATIONS ${\rm CH}_{6}^{2+}$ AND ${\rm CH}_{7}^{3+}$

2008 ◽  
Vol 07 (01) ◽  
pp. 139-156 ◽  
Author(s):  
HAI BEI LI ◽  
SHAN XI TIAN
Keyword(s):  
Chemical Bonding ◽  
Electronic Structures ◽  
Natural Bond Orbital ◽  
Chemical Bonds ◽  
Global Minima ◽  
Resonance Theory ◽  
Resonance Structures ◽  
The Common ◽  
High Possibility ◽  
Hydrogen Scrambling

Six isomers with C2v, D3h, C5v, D2d, Oh, and C4v symmetries of [Formula: see text] and two isomers with C3v and C2v symmetries of [Formula: see text] are investigated at the high ab initio level combined with the natural bond orbital and the atoms-in-molecules theorems. The hyperconjugative interaction and the electron topological analyses indicate that the multiple three-center two-electron (3c-2e) hyperbond is the common chemical-bonding basis for [Formula: see text] and [Formula: see text] species. In contrast to the planar 3c-2e (triangle structure) and planar four-center four-electron (4c-4e) hyperbonds in [Formula: see text] isomeric species, the 3c-2e hyperbond in [Formula: see text] (C4v) is linear while the 4c-4e hyperbonds in [Formula: see text] (C5v, D2d, Oh) are unplanar. [Formula: see text] (C2v) and [Formula: see text] (C3v) as the global minima have many resonance structures predicted by the natural bond resonance theory, indicating the high possibility of the hydrogen scrambling which is similar to the scenario of [Formula: see text].

Experimental analysis of charge redistribution due to chemical bonding by high-resolution transmission electron microscopy

2011 ◽  
Vol 10 (3) ◽  
pp. 209-215 ◽  
Author(s):  
Jannik C. Meyer ◽  
Simon Kurasch ◽  
Hye Jin Park ◽  
Viera Skakalova ◽  
Daniela Künzel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Resolution ◽  
Chemical Bonding ◽  
Experimental Analysis ◽  
Charge Redistribution ◽  
Transmission Electron

scholarly journals The challenges of learning and teaching chemical bonding at different school levels using electrostatic interactions instead of the octet rule as a teaching model

2018 ◽  
Vol 19 (3) ◽  
pp. 932-953 ◽  
Author(s):  
Jarkko Joki ◽  
Maija Aksela
Keyword(s):  
Secondary School ◽  
Chemical Bonding ◽  
Electrostatic Interactions ◽  
Secondary Level ◽  
Teaching Model ◽  
Electrostatic Model ◽  
Upper Secondary School ◽  
Learning And Teaching ◽  
Upper Secondary ◽  
Octet Rule

Teaching chemical bonding using the octet rule as an explanatory principle is problematic in many ways. The aim of this case study is to understand the learning and teaching of chemical bonding using a research-informed teaching model in which chemical bonding is introduced as an electrostatic phenomenon. The study posed two main questions: (i) how does a student's understanding of chemical bonding evolve from lower- to upper-secondary school when an electrostatic model of chemical bonding was used at the lower-secondary level? (ii) How does the teaching of octets/full shells at the upper-secondary level affect students’ understanding? The same students were interviewed after lower-secondary school and again during their first year at upper-secondary school. Their upper-level chemistry teachers were also interviewed. The interview data were analysed using the grounded theory method. The findings showed that the students’ earlier proper understanding of the electrostatic-interactions model at the lower-secondary level did not prevent the later development of less-canonical thinking. Teachers’ pedagogical content knowledge (PCK) of the explanatory principles of chemical bonding and how to use explanations in science education needs to be promoted in both pre-service teacher education and during in-service training.

Chemical bonding in excited states: Energy transfer and charge redistribution from a real space perspective

2017 ◽  
Vol 38 (13) ◽  
pp. 957-970 ◽  
Author(s):  
Jesús Jara-Cortés ◽  
José Manuel Guevara-Vela ◽  
Ángel Martín Pendás ◽  
Jesús Hernández-Trujillo
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Chemical Bonding ◽  
Real Space ◽  
Charge Redistribution
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