

Balaban’s J index
Definition:
q 
number of edges in the molecular graph
m = (q
– n + 1)  the cyclomatic number of the molecular graph
n
– number of atoms in the molecular graph
S_{i}
 distance sums calculated as the sums over the rows or columns of the
topological distance matrix of the molecule, D.
References:
 A. T. Balaban, Chem.
Phys. Lett., 1981, 89, 399.
 A. T. Balaban, Pure and Appl. Chem., 1983, 55,
199.

