ABC graphs

ABC graphs

In Chemistry

Authors

Vladislav Ivaništšev

Introduction

ABC graphs is a general name for diagrams showing Atom symbols, Bonding paths, atomic Charges, lone electrons (with Dots), and empty orbitals (with Ellipsis). Specific information shown on a given diagram is reflected in its name, so one may refer to AB, ABC, ABCD or ABCDE graphs.

An AB graph is a molecular graph analogues to a ball-and-stick model, yet it shows atoms with symbols and bonding paths with single lines (instead of balls and multiple sticks).

For all graphs more complicated than AB, let us agree that each drawn line corresponds to a σ-bond sharing of a pair of electrons. Then, to draw a structure one should use simple rules for determining the atomic charges, number of lone electrons, and empty orbitals.

Table of Contents

• Acronym and definitions
• Rules for drawing ABC graphs

Drawing examples

• AB graph drawing examples
• ABC graph drawing examples
• ABCD graph drawing examples
• ABD graph drawing examples
• ABCDE graph drawing examples

Structure–property relations

• ABC-type graphs and acid-base chemistry
• ABC-type graphs and redox chemistry

Chemistry of elements

• Sulfur chemistry