Thermodynamic properties of halide compounds of tetravalent transactinides in solution and in the gaseous and crystalline states

Experimental and theoretical data on the structures and properties of compounds of tetravalent transactinides (TAn^IV) Rf (Z = 104), Db (Z = 105), Sg (Z = 106), Bh (Z = 107), Hs (Z = 108), Mt (Z = 109), and ¹¹⁰TAn (Z = 110) are described systematically. The problem of disposition of the transactinide elements in the Periodic system is discussed and the properties of the 6d-, 5d-, 4d-, 3d- and 5f-elements are compared. Regularities of changes in the thermodynamic characteristics of TAn^IV compounds versus the atomic number, Z(TAn), are elucidated. Peculiarities of changes in thermodynamic properties upon the formation of nitrate, fluoride and chloride TAn^IV complexes in solution are discussed. The bibliography includes 140 references.