Polynuclear clusters of technetium. I. Synthesis, crystal and molecular structure of bromide octanuclear lrismatic and hexanuclear octahedral clusters of technetium

Abstract

Abstract The synthesis, crystal and molecular structure of the first representatives of polynuclear technetium clusters are described. The composition of these clusters is: [Tc 8 Br 4 μBr 8 ]Br. 2H 2 O; [H(H 2 O) 2 ][Tc 8 Br 4 μBr 8 ]Br; [H(H 2 O) 2 ] 2 [Tc 8 Br 4 μBr 8 ]Br 2 ; [H 3 O(H 2 O) 3 ] 2 [Tc 6 Br 6 μ 3 Br 5 ]; [(C 4 H 9 ) 4 N] 2 [Tc 6 Br 6 μ 3 Br 5 ]; [H 3 O 3 ] 2 [Tc 6 Br 6 μ 3 Br 5 ]. 4 H 2 O. It is shown that these clusters strongly differ in their structure from the known clusters of other d‐elements. The crystal and molecular structure of hexabromotechetium acid (H 3 O) 2 TcBr 6 is studied too.