Fig. 1.
Structures of the lipophilic anions studied here (notation, salt formula, chemical name): WO−, Et4N+[W(CO)5(SCNOC6H4)]−, tetraethylammonium-benzoxazolidin-2-thion-1-yl-pentacarbonyltungstate; WN−, Et4N+[W(CO)5(SCN2HC6H4)]−, tetraethylammonium-benzimidazolidin-2-thion-1-yl-pentacarbonyltungstate; WS−, Et4N+[W(CO)5(SCNSC6H4)]−, tetraethylammonium-benzothiazolidin-2-thion-1-yl-pentacarbonyltungstate; WW−, Et4N+[W2(CO)10(μ-S2CH)]− tetraethylammonium decacarbonyl-μ-dithioformiato-ditungstate; DPA−, dipicrylamine (2,2',4,4',6,6'-hexanitrodiphenylamine); TPB−, Na+[B(C6H5)4]− sodium tetraphenylborate; B(CF3)−4, Cs+[B(CF3)4]−, cesium tetrakis-(trifluormethyl)-borate