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. Author manuscript; available in PMC: 2012 Jun 29.
Published in final edited form as: J Am Chem Soc. 2011 Jun 7;133(25):9762–9774. doi: 10.1021/ja109178q

Table 3.

Fragment Orbital Löewdin Compositions (% character) for the SORCI Active Space Natural Orbitals for 1.a

Natural
Orbital
Occupation
Number
Mo OH OCH3 Sdithiolene
(P-
pterin)
Sdithiolene
(Q-
pterin)
Dithiolene
(P-pterin)
Dithiolene
(Q-pterin)
D-6 1.98 5 0 4 31 35 37 54
D-5 1.97 23 8 33 16 19 17 20
D-4 1.97 23 5 23 29 16 32 17
D-3 1.96 26 9 15 17 29 19 33
D-2 1.96 31 2 3 28 32 30 34
D-1 1.64 23 1 1 21 25 34 43
D0 1.52 12 1 1 34 25 51 36
S0 0.68 77 4 10 3 3 5 5
U0 0.61 70 2 7 11 7 13 8
U+1 0.58 68 6 2 7 14 8 17
U+2 0.08 66 5 8 2 16 2 18
U+3 0.04 64 5 0 20 8 22 9
a

D = doubly occupied MO; S = singly occupied MO; U = unoccupied MO. All values from ORCA SORCI calculation.