Synthesis, characterization and biological activities of some new chromium molybdenum and tungsten complexes with 2,6-diaminopyridine

The reactions of [M(CO)6], M = Cr, Mo, W with 2,6-diaminopyridine (dap) in ethanol was carried out under sun light and microwave irradiation routes of synthesis and compared with the traditional thermal reflux method. All routes resulted in the formation of the binuclear oxo complexes with the general formulas [M2(O)4(dap)2]. The prepared complexes were characterized using elemental analysis, IR, 1HNMR, mass spectrometry and magnetic measurement. The biological activity of dap and its complexes as antibacterial and antifungal reagents have been screened.

Graphical abstractThe reactions of [M(CO)6], M = Cr, Mo, W, with 2,6-diaminopyridine (dap) in ethanol was carried out under sun light and microwave irradiation routes of synthesis and compared with the traditional thermal reflux method. All routes resulted in the formation of the binuclear oxo complexes with the general formulas [M2(O)4(dap)2]. The prepared complexes were characterized using elemental analysis, IR, 1HNMR, mass spectrometry and magnetic measurement. The biological activity of dap and its complexes as antibacterial and antifungal reagents have been screened.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The reactions of [M(CO)6], M = Cr, Mo or W with 2,6-diaminopyridine using sun light and microwave irradiation and the traditional reflux route. ► The binuclear oxo complexes with the general formulas [M2(O)4(dap)2]. Also, the reaction of [W(CO)6] with (dap) gave [W2(O)4(dap)2]. ► The prepared complexes were characterized using elemental analysis, IR, 1HNMR, mass spectrometry and magnetic measurement. ► The biological activity of dap and its complexes as antibacterial and antifungal reagents have been screened.