“…The structure of (I) may be compared with other compounds which contain a nickelafluorenyl ring. So far, only a few examples of such complexes have been reported, containing either one (Vicic & Jones, 1999;Schaub et al, 2006;Keen et al, 2007;Bennett et al, 2003;Schaub & Radius, 2005), two (Buchalski et al, 2006;Losi et al, 2007) or three (Schaub et al, 2006;Keen et al, 2007;Bennet et al, 1990) Ni atoms in the molecule (Fig. 3).…”