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. 2013 Oct 31;2(1):586. doi: 10.1186/2193-1801-2-586

Table 1.

Some molecular information about modeled azo-derivatives

Compound 1 2 3 4
Empirical formula C16H11N3O2 C23H16N4O3 C21H14N4O4 C21H14N4O4
Molecular mass, (a.m.u.) 277.28 396.40 386.37 386.37
Number of electrons (valence electrons + lone pairs) 102 146 142 142
Number of double occupied molecular orbitals (OMO) 51 73 71 71
Number of unoccupied (virtual) molecular orbitals (UMO) 44 63 59 59
Number of total molecular orbitals (OMO+UMO) 95 136 130 130
Polarizability, (Å3) 30.05 42.98 39.78 39.78
Refractivity, (Å3) 82.34 115.60 109.35 109.35
Log P 3.57 4.34 3.27 3.27