Related Experiment Video
Updated: May 31, 2026

Synthesis of a Water-soluble Metal–Organic Complex Array
Published on: October 8, 2016
Rubidium 2,4,6-trioxo-1,3-diazinan-5-ide-1,3-diazinane-2,4,6-trione-water (1/1/1)
Marlena Gryl1, Katarzyna Stadnicka
1Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
Abstract:
The asymmetric unit of the title compound, Rb(+)·C(4)H(3)N(2)O(3) (-)·C(4)H(4)N(2)O(3)·H(2)O, consists of one rubidium cation, a barbituric acid mol-ecule, a barbiturate anion and one water mol-ecule. The rubidium ion has seven close-contact inter-actions with O atoms, with Rb⋯O distances ranging from 2.8594 (16) to 3.2641 (14) Å. These seven O atoms together with an eighth O atom at 3.492 (2) Å away from Rb form a distorted polyhedron with shape inter-mediate between an anti-prism and a dodeca-hedron. The Rb(+) ions connect layers built of organic components and water mol-ecules linked via N-H⋯O and O-H⋯O hydrogen bonds.
Related Concept Videos
Diazonium Group Substitution: –OH and –H
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by water loss...
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Formation of Halohydrin from Alkenes
Balancing Redox Equations
