Thermochemical properties of inorganic substances

Gas-phase thermochemical properties of pyrimidine nucleobases.

The gas-phase acidity and proton affinity of thymine, cytosine, and 1-methyl cytosine have been examined using both theoretical (B3LYP/6-31+G*) and experimental (bracketing, Cooks kinetic) methods. This paper represents a comprehensive examination of multiple acidic sites of thymine and cytosine and of the acidity and proton affinity of thymine, cytosine, and 1-methyl cytosine. Thymine exists a...

ThermInfo: Collecting and Presenting Thermochemical Properties

Due to the large amount of chemical data available, it is essential to organize them and given the numerous problems derived from applying spreadsheets, it motivated us to construct an improved tool geared to contain large amounts of data. This paper presents ThermInfo, a public web tool that integrates a database based upon a relational data specification for describing structural and thermoch...

The Polymerisation of Formaldehyde in Presence of Inorganic Substances.

Inorganic Phosphorus in Plant Substances. an Improved Method of Estimation

In the synthesis of organic phosphorus compounds by the plant and in their storage in the seed as reserve food the inorganic phosphates play an important part. The phosphorus used in this synthetic process is taken into the plant in inorganic form and used in the building up of complex organic phosphorus compounds such as lecithins, phosphoand nucleo-prot,eins and salts of phytic acid. It is be...

Dielectric properties of dipolar substances

From an investigation of structure it is shown that there exists a large group of dipolar organic solids whose dipoles have two equilibrium positions with opposite dipole direction. To calculate the dielectric properties Onsager’s theory has been extended and developed into a systematic approximation which converges above a critical temperature. To derive the local field acting on a dipole we h...