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A new ligand formation was observed in the title complex, [Cu(C4H4N3O2){N(CN)2}(C10H8N2)], as a result of the nucleophilic addition reaction between methanol and dicyanonitrosomethanide in the inner coordination sphere of a CuII atom. This new ligand, 3-amino-3-methoxy-2-nitrosoacrylonitrilate (add) [NHC(OMe)C(CN)NO]-, is coordinated as a chelate, forming a five-membered metallocycle with CuII. The distorted tetragonal-pyramidal coordination is completed by one chelate-coordinated molecule of 2,2'-bipyridine (bipy) and one end-coordinated dicyanamide anion, [N(CN)2]-. The four N atoms of the two metallocycles form the base and a fifth N-atom, from the dicyanamide anion, forms the apex of the pyramid, creating a {CuN5} chromophore. The structure of [Cu(add)(bipy){N(CN)2}] XX consists of discrete molecules.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks bb2a, global

fcf

Structure factor file (CIF format)
Contains datablock bb2a

CCDC reference: 128033

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