"The Greens don't want to negotiate on a coalition" with Merkel, party vice-president Claudia Roth told a press conference after hours of discussions in Berlin.
Merkel must now attempt to form a coalition with the centre-left Social Democrats (SPD) with whom talks are due to resume on Thursday.
Hermann Gröhe, secretary general of Merkel's CDU party confirmed that "there won't be negotiations on a coalition government," with the Green party.
Despite a convincing win at the polls on September 22nd, the CDU and their Bavarian sister party the CSU need to form an alliance with another party in order to ensure a majority in parliament.
A recent poll showed two-thirds of Germans would favour a left-right “grand coalition” between the two big parties - Merkel's conservatives and the SPD
The two main parties have already held two rounds of talks with a third pencilled in for Thursday before the talks with the Greens broke down.
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