B. Nowicka et al., SYNTHESES AND X-RAY CRYSTAL-STRUCTURE OF (DQ)(2)[M(CN)(8)]CENTER-DOT-5H(2)O (M = MO, W, DQ = DIQUAT), Polyhedron, 17(18), 1998, pp. 3167-3174
Reaction between diquat (dq= 6 7-dihydrodipyrido-[1,2-a:2',1'-c]pyrazi
nediium) and [M(CN)(8)](4-) (M = Mo or W) led to the isolation of (dq)
(2)[M(CN)(8)]. 5H(2)O salts. Both salts were found to be isomorphic. T
he [M(CN)(8)](4-) anion has an approximately dodecahedral D-2d configu
ration. The structure consists of a three dimensional hydrogen bonded
network. The intensely coloured solids (hydrated and anhydrous) show i
on-pair charge-transfer (IPCT) interaction which is discussed in terms
of their structure. (C) 1998 Elsevier Science Ltd. All rights reserve
d.