Knowing the characteristics of the transitions and orbitals involved within, one can explain a significant redshift of the lower-energy absorption band (from 420 nm to 950 nm) observed for n=3-8. As the size of Chini clusters increases the excitation process primarily afects the electronic structure in the longitudinal (inter-triangle) direction, while the transverse (intratriangle) one remains rather unafected -the second absorption band shifts slightly from 350 nm to 370 nm. This anisotropic behaviour in electronic excitation can be attributed to the spatial arrangement and interactions of Pt3-units within each cluster.