The phase diagrams of mercury halides

Reactivity of mercury(II) halides with the unsymmetrical phosphorus ylide

The unsymmetrical phosphorus ylide, Ph2PCH2CH2PPh2@C(H)C(O)Ph is shown to react with Hg(II) halides to form polymeric products with the composition {HgX2[PPh2CH2CH2PPh2C(H)C(O)Ph]}n, where X = Cl (1), Br (2), I (3). The complexes have been characterized by elemental analysis, IR, H, P NMR spectra as well as by ESI mass spectra. In product 1 the ylide exhibits a P, C-bridging mode of coordinatio...

Magnetic phase diagrams of the

Geochemical Phase Diagrams and Gale Diagrams

The problem of predicting the possible topologies of a geochemical phase diagram, based on the chemical formula of the phases involved, is shown to be intimately connected with and aided by well-studied notions in discrete geometry: Gale diagrams, triangulations, secondary fans, and oriented matroids.

The building - up of phase diagrams *

This paper begins with a bird’s-eye view of the history of phase equilibrium diagrams for mixtures, their classification and interpretation. Running throughout the discussion are the fertile ideas of van der Waals. The Scott and van Konynenburg classification is revisited, and various types of phase diagrams are generated by computer simulation, using the Gibbs Ensemble Monte Carlo Method for o...

Phase diagrams of mesomorphic mixtures

2014 We have combined the Maier Saupe theory [1] of the nematic-isotropic transition and the Flory Huggins theory of mixtures to describe the phase diagrams of two nematogens A + B. The two components can have different order parameters SA, SB in the mixture. We can then predict the morphology of the phase diagrams in term of a relatively small number (4) of interaction parameters. The final nu...