Related Experiment Video
Updated: Aug 7, 2025

Harmonic Nanoparticles for Regenerative Research
Published on: May 1, 2014
[C(NH2)2NHNO2][C(NH2)3](NO3)2: A Mixed Organic Cationic Hybrid Nitrate with an Unprecedented Nonlinear-Optical-Active
Dong Yan1,2, Meng-Meng Ren1, Qian Liu1
1Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.
Abstract:
We herein report a mixed organic cationic hybrid nitrate, namely, [C(NH2)2NHNO2][C(NH2)3](NO3)2 (1). It was successfully achieved via combining three different planar groups: [(C(NH2)2NHNO2]+, C(NH2)3+, and NO3-. First-principles calculations confirm that the [(C(NH2)2NHNO2]+ group is an excellent cationic nonlinear-optical (NLO)-active unit. The title compound exhibits a moderate second-harmonic-generation (SHG) response (1.5 × KDP), a wide band gap (3.58 eV), and a suitable birefringence of 0.071 at 550 nm. Theoretical calculations indicate that the synergy effect between the [(C(NH2)2NHNO2]+ and C(NH2)3+ groups dominates the SHG process.
Related Concept Videos
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...
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
Cationic Chain-Growth Polymerization: Mechanism
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
Anionic Chain-Growth Polymerization: Overview
2° Amines to N-Nitrosamines: Reaction with NaNO2

