“…Gaseous germanium salts were found in studies of vaporization products in the systems GeO 2 -P 2 O 5 [10], GeO 2 -WO 3 [11], GeO 2 -MoO 3 [12], and GeO 2 -Nb 2 O 5 [13]. At present it is known that the gaseous salts GePO 3 , GeWO 3 , GeWO 4 , GeW 2 O 7 , GeMoO 3 , GeMoO 4 , and GeNbO 3 exist, as well as tin and lead gaseous borates and vanadates, which were thermodynamically characterized [1,14].…”