Description: Front cover of the fall 2012 issue of The Hexagon, which features an image of the "ring of fire" that occurred during the annular eclipse on May 20, 2012. The photograph was taken in Brownfield, Texas a few minutes before sunset. The inside cover contains a table of contents, a staff list, an editorial, and details about the cover photograph.

Description: Front cover of the summer 2012 issue of The Hexagon, which features the Helium Monument in Amarillo, Texas. The visible portion of this monument is a metal sculpture of a helium molecule hanging from the center of a structure of metal bars. The inside cover contains a table of contents, a staff list, an editorial, and a description of the Helium Monument.

Description: Front cover of the spring 2012 issue of The Hexagon, featuring the pharmacy at Quedlinburg, Germany, where Martin Heinrich Klaproth was trained. The three story building is pinkish with white trim around its windows. A triangular stone piece with the image of a flying bird sits on the third floor over the entrance. The inside cover of the magazine contains a table of contents, staff listings, an editorial, and a description of the building.

Description: This article discusses the solubility of polycyclic aromatic hydrocarbons in pure and organic solvent mixtures. Abstract: This work updates Vols. 54, 58, and 59 in the IUPAC Solubility Data Series and presents solubility data for polycyclic aromatic hydrocarbon solutes dissolved in neat organic solvents. Published solubility data for acenaphthene, anthracene, biphenyl, carbazole, dibenzofuran, dibenzothiophene, fluoranthene, fluorene, naphthalene, phenanthrene, phenothiazine, pyrene, thianthrene, and xanthene that appeared in the primary literature from 1995 to the end of 2011 are compiled and critically evaluated. Experimental solubility data for more than 550 different solute-organic solvent systems are included. Solubility data published prior to 1995 were contained in three earlier volumes (Vols. 54, 58, and 59) and are not repeated in this volume.

Description: This article discusses the solubility of polycyclic aromatic hydrocarbons in pure and organic solvent mixtures. Abstract: This work updates Vols. 54, 58, and 59 in the IUPAC Solubility Data Series and presents solubility data for polycyclic aromatic hydrocarbon solutes dissolved in ternary organic solvent mixtures. Published solubility data for anthracene, phenanthrene, and pyrene that appeared in the primary literature between 1995 to the end of 2011 are compiled and critically evaluated. Experimental solubility data for 119 different solute-ternary solvent systems are included in the volume. Solubility data published prior to 1995 were contained in three earlier volumes (Vols. 54, 58, and 59) and are not repeated here.