INDEX cyclopentadienyl derivatives

Until the mid-1990s, the CSD base archived 4079 derivatives of cyclopentadienyl and cyclopentadiene bound to almost all elements from Li to Tl. Table 21 presents the values of HOMA index estimated as a mean value for the subsamples built up of the compounds of cyclopentadiene or cyclopentadienyl moieties with particular elements. In most cases the data observed are greatly dispersed hence, statistical characteristics are given as averages and the interquartile ranges of HOMA values as well as the mean C—X interatomic distances are given with their interquartile ranges (variances could not be used for... 

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