The Security Council's chairman suggested last Thursday that a draft resolution imposing economic and diplomatic sanctions on the Islamic Republic could be submitted to the council by the end of the week.
However, Russia's Sergei Lavrov said: "No specific proposals have been submitted to the Security Council so far. Consultations on the issue are still under way."
The UN adopted a resolution on Iran on July 31, demanding that the country suspend uranium enrichment by August 31 or face sanctions. But Tehran, which denies that its nuclear project is aimed at producing weapons, refused to suspend uranium enrichment.
The United States and Britain renewed calls for sanctions against a defiant Iran after negotiations between the country's key nuclear negotiator, Ali Larijani, and EU foreign policy chief Javier Solana failed to produce any breakthrough.
Sergei Lavrov said consultations are aimed at finding ways to ensure compliance with the non-proliferation regime, and also to continue talks with Iran taking into account the country's rights under the Nuclear Non-Proliferation Treaty.
Tehran has repeatedly asserted its right to pursue peaceful nuclear energy under the NPT.
The minister said Russia "will use all available means" to reach solutions that open the way to successful negotiations.
Russia and China, veto-wielding powers with business interests in Iran, have consistently opposed any punitive measures against Tehran.
