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. 2022 Jun 23;32(5):1857–1871. doi: 10.1007/s10895-022-03000-6

Fig. 2.

Fig. 2

BTC, CBTC, and BBTC molecular modeling graphical presentation of HOMO (H), LUMO (L), H-1, L + 1, H-2, and L + 2 orbitals as well as energy gaps between the following: H/L (Eg), H-1/L + 1 (Eg1) and H-2/L + 2 (Eg2) in the gaseous state via utilizing CAM-B3LYP/6-311G +  + (2d, 2p) level of theory