Related Experiment Video
Updated: May 20, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
(Acetato-κO)(acetato-κ²O,O')[2-(3,5-di-methyl-1H-pyrazol-1-yl-κN²)quinoline-κN]zinc(II)
Muhd Hidayat Bin Najib1, Ai Ling Tan, David J Young
1Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link BE 1410, Negara Brunei Darussalam.
Abstract:
The Zn(II) atom in the title compound, [Zn(C₂H₃O₂)₂(C₁₄H₁₃N₃)], is coordinated by an N₂O₃ donor set defined by the quinolinyl- and pyrazolyl-N atoms of the chelating heterocyclic ligand, and three carboxyl-ate-O atoms derived from the monodentate and bidentate carboxyl-ate ligands. Distortions from the ideal square-pyramidal coordination geometry relate to the restricted bite angle of the chelating ligands, i.e. O-Zn-O = 59.65 (5) and N-Zn-N = 76.50 (6)°, and the close approach of the non-coordinating carbonyl atom [Zn⋯O = 2.858 (2) Å]. In the crystal, mol-ecules are consolidated into a three-dimensional architecture by C-H⋯O inter-actions.
Related Concept Videos
Structures of Carboxylic Acid Derivatives
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...
IUPAC Nomenclature of Ketones
Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis
Types of Enols and Enolates
Acetals and Thioacetals as Protecting Groups for Aldehydes and Ketones
In the presence of multiple functional groups, when selective reduction of one group over the other is desired, groups like aldehydes and ketones that form acetals...
α-Hydroxy Ketones via Reductive Coupling of Esters: Acyloin Condensation Overview

