Syntheses and coordination chemistry of perfluoroaryl-1H-tetrazoles
作者： Harald Gerhards , Alexander Krest , Patrick J. Eulgem , Dieter Naumann , Dennis Rokitta
DOI: 10.1016/J.POLY.2015.08.006
关键词: Ion 、 Tetrazole 、 Chemistry 、 Medicinal chemistry 、 Trifluoromethyl 、 Ligand 、 Organic chemistry 、 Superexchange 、 Electron paramagnetic resonance 、 Crystal structure 、 Coordination complex
摘要: Abstract Attempts to prepare fluorinated 5-aryl-1H-tetrazoles by various methods were successful for (3,5-bis(trifluoromethyl)phenyl)tetrazole (BTFTH) and in part 5-pentafluoropenyltetrazole (F5PhTetH) 5-(tetrafluoro-4-pyridinyl)tetrazole (F4PyTetH). For BTFTH, several different gave satisfactory yields purity. the other compounds, same allowed only observation of desired species very small quantities ill-defined reaction product mixtures with azidodefluorination being dominant side reaction. Negative ionising MS proved be superior showing clean elimination mainly N2 CF2 from tetrazolate anions. From Cu complex [(BTFT)2Cu(Py)2]n could obtained fully characterised, including crystal structure determination (for ligand). Magnetic EPR data polymeric suggest that superexchange (SE) between Cu2+ ions (S = ½) is negligible. This can understood examining details possible SE path.
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