VIENNA — Iranian negotiators on Wednesday agreed to consider a draft deal that — if accepted by the Tehran leadership — would delay its ability to make nuclear weapons by sending most of the material that it would need to Russia for processing, diplomats said Wednesday.

International Atomic Energy Agency chief Mohamed ElBaradei confirmed that representatives of Iran and its three interlocutors — Russia, France and the United States — had accepted the draft, which still has to be finalized by the four nations’ capitals. ElBaradei said he hoped that the finalization would occur by Friday.

“I have circulated a draft agreement that in my judgment reflects a balanced approach to how to move forward,” ElBaradei told reporters, suggesting that all four parties had worked hard to overcome differences exacerbated by suspicions that Iran may be interested in nuclear weapons. Tehran insists its activities are peaceful and meant only to generate energy.

He gave no details of what was in the agreement. But diplomats said it was essentially the original proposal drawn up by the IAEA that would commit Tehran to shipping 75 percent of its enriched uranium stockpile to Russia for further enrichment.