Stabilization of the (η4-COD)Pt-fragment (COD = η2,η2-cyclo-octa-1,5-diene) by a bistriazenide: Synthesis and X-ray structural characterization of [(η4-COD)Pt(NNN-Ph)2C6H4], a neutral 1,2-bis(phenyltriazenido)benzene complex of platinum(II)

After exchange of Cl against NO3 by reaction with AgNO3 [(COD)PtCl2] reacts with the sodium salt of 1,2-bis(phenyltriazene)benzene to give [(η4-COD)Pt(NNN-Ph)2C6H4], the first example of a π-fragment of platinum(II) stabilized by two symmetrical triazenide chains. The new complex belongs to the monoclinic space group C2/c and corroborates the ability of the (COD)Pt fragment to be stabilized by bidentate ligands. The odd flying dragon structure of the title compound retains the C2v symmetry of the free anion 1,2-bis(phenyltriazenide)benzene.

Graphical abstract[(COD)PtCl2] reacts with the sodium salt of 1,2-bis(phenyltriazene)benzene after exchange of Cl against NO3 to give [(η4-COD)Pt(NNN-Ph)2C6H4], the first π-fragment of platinum(II) stabilized by two symmetrical triazenide chains. A singular feature of the new complex is its flying dragon alike structure which maintains the C2v symmetry of the free anion 1,2-bis(phenyltriazenide)benzene.Figure optionsDownload full-size imageDownload as PowerPoint slide