Author
Ionel Haiduc
Other affiliations: Northern Illinois University, Iowa State University, University of Göttingen ...read more
Bio: Ionel Haiduc is an academic researcher from Babeș-Bolyai University. The author has contributed to research in topics: Supramolecular chemistry & Crystal structure. The author has an hindex of 37, co-authored 323 publications receiving 5829 citations. Previous affiliations of Ionel Haiduc include Northern Illinois University & Iowa State University.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the synthetique de complexes metalliques utilisables en chimiotherapeutique is presented, and a bibliographique of the complex metallique is described.
237 citations
220 citations
161 citations
Book•
01 Jan 2000
TL;DR: In this article, the basic concepts and principles of molecular recognition and host-guest interaction are discussed, including the following: Supramolecular Self-Assembly by Dative Bonds (Electron-Pair Donor-Acceptor or Lewis acid base Interactions).
Abstract: Basic Concepts and Principles. Molecular Recognition and Host-Guest Interactions. Supramolecular Self-Assembly by Dative Bonds (Electron-Pair Donor-Acceptor or Lewis Acid-Base Interactions). Supramolecular Self-Assembly by Formation of Secondary Bonds. Supramolecular Self-Assembly by Hydrogen-Bond Interactions. Supramolecular Self-Assembly Caused by Ionic Interactions. Supramolecular Self-Assembly as a Result of PI-Interactions. Subject Index.
155 citations
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Journal Article•
28,685 citations
2,151 citations
TL;DR: Experimental as well as computational studies indicate that halogen and other sigma-hole interactions can be competitive with hydrogen bonding, which itself can be viewed as a subset of s Sigma-hole bonding.
Abstract: A halogen bond is a highly directional, electrostatically-driven noncovalent interaction between a region of positive electrostatic potential on the outer side of the halogen X in a molecule R–X and a negative site B, such as a lone pair of a Lewis base or the π-electrons of an unsaturated system. The positive region on X corresponds to the electronically-depleted outer lobe of the half-filled p-type orbital of X that is involved in forming the covalent bond to R. This depletion is labeled a σ-hole. The resulting positive electrostatic potential is along the extension of the R–X bond, which accounts for the directionality of halogen bonding. Positive σ-holes can also be found on covalently-bonded Group IV–VI atoms, which can similarly interact electrostatically with negative sites. Since positive σ-holes often exist in conjunction with negative potentials on other portions of the atom's surface, such atoms can interact electrostatically with both nucleophiles and electrophiles, as has been observed in surveys of crystallographic structures. Experimental as well as computational studies indicate that halogen and other σ-hole interactions can be competitive with hydrogen bonding, which itself can be viewed as a subset of σ-hole bonding.
1,332 citations