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- W1978093284 abstract "Bis(hexafluoroacetylacetone)ethylenediimine(H 2 hfacen) was prepared by sublimation of the hexafluoroacetylacetone salt of ethylenediamine, en·2Hhfa. In addition to H 2 hfacen, the sublimation method yields 2,3-dihydro-5,7-bis(trifluoromethyl)-1H-1,4-diazepine(cyclohfa-en) and a hexafluoroacetylacetone salt of 1-amino-2-(trifluoroacetamido)ethane, tfe·Hhfa. H 2 hfacen is not stable and readily loses a mole of Hhfa to give cyclohfa-en. Attempts to prepare Cu(hfacen) by normal solution methods yielded only solvated Cu(hfa) 2 . Gas transport reactions and reactions of CuCl 2 with the ligands in benzene resulted in the synthesis of the following new compounds: CuCl 2 ·H 2 hfacen, Cu(hfa) 2 ·H 2 hfacen, Cu(hfa) 2 ·cyclohfa-en, and Cu(hfa) 2 ·2tfe. The structures of the ligands were confirmed by NMR and i.r. spectra. Thermogravimetric data show that some of the Cu complexes are quite volatile. One of the reasons that template synthesis of H 2 hfacen has failed in solution may be that hydroxylic solvents (water, methanol) add across the carbonyl group to Hhfa to give compounds such as 1,1,1,5,5,5-hexafluoro-2,2,4,4-tetrahydroxypentane and 1,1,1,5,5,5-hexafluoro-2,4-dihydroxy-2,4-dimethoxypentane." @default.
- W1978093284 created "2016-06-24" @default.
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- W1978093284 date "1970-06-01" @default.
- W1978093284 modified "2023-09-25" @default.
- W1978093284 title "Schiff bases prepared from ethylenediamine and hexafluoroacetylacetone" @default.
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- W1978093284 doi "https://doi.org/10.1016/0022-1902(70)80599-1" @default.
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