Chem Web Browsing

a. ChemFinder for MSDS information of chemicals

b. Rasmol Reference Manual by Roger Sayle

c. Los Alamos Periodic Table of Elements

d. Online Journals:
Angewandte Chemie, International Edition
Chemistry of Materials
Chemical Communications by RSC

N₂F₄

Heat of Formation is -0.473 kcal/mol. calculated using semi-empirical PM3 basis set

N₂F₄ (eclipsed dihedral angle)

Heat of Formation is 1.970 kcal.mol, calculated using semi-empirical PM3 basis set

This constrained conformation is a transitional state and it cannot rotate freely at room temperature, because the heat of formation of this compound is a positive value, which is thermodynamically unfavorable.

Cro Protein Complex (ID: 3CRO)