A senior State Department official confirmed the two men would meet on Friday following talks this week in Geneva.
Iran and six world powers -- the United States, Britain, France, Germany, Russia and China -- have renewed their quest for an elusive nuclear deal - seen as crucial to reducing the risk of a wider Middle East war - after negotiators failed for the second time in November to meet a self-imposed deadline.
The new deadline for a long-term agreement is June 30.
The major powers hope to persuade Iran to curb its nuclear program, which the West suspects may seek to develop atomic weapons, in exchange for a gradual easing of economic sanctions. Iran says its nuclear program is solely for peaceful purposes.
In a New Year`s address to the foreign and French diplomatic corps on Friday, President Francois Hollande said questions were unanswered over Iran`s uranium enrichment and the production of fissile material that could be used to create a nuclear bomb.
"France wants a definitive agreement, but with a clear line: yes for Iran to have civilian nuclear power, but no to military nuclear power. We will be intransigent on this principle," he said.
France, a UN Security Council veto-holder, has long held out for strict terms for a nuclear deal trading a loosening of international sanctions on Iran`s oil-based economy in return for commitments by Tehran to show its nuclear work is as peaceful as it says.
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