Vapor pressures over CuBr and ZnEr2 solids were measured by the Knudsen effusion method assuming that the vapor species consisted solely of trimers and monomers, respectively. The vapor pressures fitted the following linear equations over the temperature ranges considered:CuBr, In(p/Pa) = -(14936 +/- 371) (K/T) + (23.73 +/- 0.63)(from 528.8 to 658.2K);and ZnEr2, In (p/Pa) = -(13867 +/- 247)(K/T) + (26.68 +/- 0.49) (from 452.5 to 574.0K). The standard sublimation enthalpies for CuBr and ZnEr2 were estimated to be 124.2 +/- 3.1 and 115.3 +/- 2.1 kJ/mol, and the standard sublimation entropies were estimated as 197.3 +/- 5.2 and 221.8 +/- 4.1 J/(mol K), respectively. Identification of the predominant vapor species from each metal bromide was conducted using mass spectrometry. From the analysis, it was confirmed that the main vapor species were the trimer (Cu3Br3) for CuBr and the monomer (ZnEr2) for ZnEr2. (C) 2014 Elsevier B.V. All rights reserved.