Li Z, Deng W. Synthesis, characterization, crystal structure and DFT studies on 1',3'-dihydrospiro[fluorene-9,2'-perimidine].
SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011;
82:56-62. [PMID:
21803646 DOI:
10.1016/j.saa.2011.06.061]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Revised: 06/18/2011] [Accepted: 06/23/2011] [Indexed: 05/31/2023]
Abstract
The title compound, 1',3'-dihydrospiro[fluorene-9,2'-perimidine] has been synthesized and characterized by NMR, ESI-MS, IR, elemental analysis, UV-vis and fluorescence spectroscopy. The crystal structures of the title compound and its co-crystal with 9-fluorenone have also been determined by X-ray single crystal diffraction. Density functional theory (DFT) calculations and vibrational frequencies have been performed at B3LYP/6-31G* level. The comparisons between the experimental vibrational frequencies and the predicted data show that B3LYP/6-31G* method can simulate the IR of the title compound on the whole. The theoretical electronic absorption spectra have been calculated by using TD-DFT method and compared with the experimental result. The solid-fluorescence determination of the title compound reveals two emission bans at 430 and 590 nm while its co-crystal reveals only one emission band at 590 nm.
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