57774-53-5 NSC299975 RU2S2NME2-5 Ruthenium(1+), bis[.mu.-(dimethylcarbamodithioato-S:S,S')][.mu.-(dimethylcarbamodithioato-S:S')]bis(dimethylcarbamodithioato-S,S')di-, (Ru-Ru), tetrafluoroborate(1-)