Preparation and properties of the aqua ions [W(4)S(4)(H(2)O)(12)](n+) (n = 5, 6) and crystal structure of (Me(2)NH(2))(6)[W(4)S(4)(NCS)(12)].0.5H(2)O.
The [3 + 1] reaction of [W(3)S(4)(H(2)O)(9)](4+) with [W(CO)(6)] in 2 M HCl under hydrothermal conditions (130 degrees C) gives the [W(4)S(4)(H(2)O)(12)](6+) cuboidal cluster, reduction potential 35 mV vs NHE (6+/5+ couple). The reduced form is obtained by controlled potential electrolysis. X-ray crystal structure was determined for (Me(2)NH(2))(6)[W(4)S(4)(NCS)(12)].0.5H(2)O. The W-W and W-S bond lengths are 2.840 and 2.379 A, respectively.
Sokolov
Maxim N
MN
Institute of Inorganic Chemistry, Russian Academy of Sciences, pr. Lavrentjeva 3, Novosibirsk 630090, Russia.
Dybtsev
Danil N
DN
Virovets
Alexander V
AV
Fedin
Vladimir P
VP
Esparza
Pedro
P
Hernandez-Molina
Rita
R
Fenske
Dieter
D
Sykes
A Geoffrey
AG