W. Schutt et al., REACTION OF 2,4-DITHIO-1-TUNGSTABICYCLO[1 .1.0]BUTANE-BIS-TETRAFLUOROBORATE COMPLEXES WITH THIOUREA, Journal of organometallic chemistry, 475(1-2), 1994, pp. 177-181
The reacting of dicationic 1-tungsta-2,4-dithiabicyclobutane complexes
(1a,b) with thiourea dealkylation gives monocationic, bicyclic comple
xes in high yields. Further attempts to eliminate the remaining second
S-methyl substituent by use of stronger bases in order to obtain the
corresponding dithiocarboxylato complexes failed so far.