It lost 0.2% to trade at 87.47 versus the euro and shed 0.4% against the yuan to 11.63 .
Brent crude oil , a global benchmark for Russia's main export, was down 0.5% at $84.6 a barrel, but still far higher than last week's levels.
Although higher oil prices usually boost the rouble, tighter foreign exchange supplies were hurting the Russian currency. Month-end tax payments that usually see exporters convert foreign exchange revenues into roubles were due last week. Analysts say capital outflows from Western investors selling assets, wealthy Russians converting roubles and periodic Eurobond payments that require swift conversion into hard currency, are partially behind the rouble weakness. For Russian equities guide see For Russian treasury bonds see (Reporting by Alexander Marrow; Editing by Robert Birsel)
