The influence of electronegativity on linear and triangular three-centre bonds

Abstract

Electronegativity differences between bonding atoms have major effects on the strengths of chemical bonds but they affect two-centre and three-centre bonds in different ways and with different consequences. The effect on two-centre bonds was recognised almost 100 years ago but the influence of electronegativity difference on three-centre bonding has received less attention. Molecular orbital models of three-centre bonding are discussed and their application to the understanding of the properties of three-centre bonded species illustrated.

Introduction to hypervalent iodine chemistry. Part 3

“…Part 1 (2020) and Part 2 (2021) contain total 20 papers covering a broad range of topics of the HI chemistry. Specific topics of these papers include the following: theoretical and computational studies of HI compounds, [2][3][4] structural studies, 5 development of new synthetic approaches to HI reagents, [6][7][8][9] photochemical reactions involving HI chemistry, 10,11 industrial applications of hypervalent polyiodides, 12 and numerous synthetic applications of HI reagents. [13][14][15][16][17][18][19][20] Part 3 of the HI series will be published in 2022 covering all topics of iodine chemistry involving hypervalent species and halogen bonding.…”