Acta Crystallogr E Crystallogr Commun
November 2016
In the title compounds, [ZrBr(CHN)], (I) and [ZrBr(CHN)], (II), the positions of the η-binding 2-di-methyl-amino-indenyl units are fixed by intra-molecular C-H⋯Br inter-actions involving aromatic or di-methyl-amino H atoms. The binuclear mol-ecule of (I) is located on a general position, while the mononuclear mol-ecule of (II) is situated on a twofold rotation axis. Both Zr atoms in (I) are ligated by one cyclo-penta-dienyl (CP) ring and four Br ligands (two bridging, two terminal), while in (II) the Zr atom is ligated by two CP rings and two terminal Br ligands.
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