Bis(pyrazolyl)acetate and bis(3,5-dimethylpyrazolyl)acetate tris-acetonitrile ruthenium(II) complexes: Synthesis, properties, and structure
作者： Alexis E. Fields , Dane Zurwell , Clifford W. Padgett , Brandon Quillian
DOI: 10.1016/J.JORGANCHEM.2017.05.060
关键词: Trifluoromethyl 、 Acetonitrile 、 Inorganic chemistry 、 Iodide 、 Medicinal chemistry 、 Chemistry 、 Acetic acid 、 Nuclear magnetic resonance spectroscopy 、 Carboxylate 、 Ruthenium 、 Ligand
摘要: Abstract [(η6-p-cymene)RuI2]2 (1) was reacted with the heteroscorpionate ligands, bis(pyrazolyl)acetic acid (BPAH) or bis(3,5-dimethylpyrazoly)acetic (BMPAH), in presence of potassium carbonate under various conditions to yield cationic Ru(II) complexes: [(BPA)Ru(cymene)]I (2), [(BMPA)Ru(cymene)]I (3), [(BPA)Ru(NCMe)3]I (4), and [(BMPA)Ru(NCMe)3)]I (5). The piano-stool, η6-cymene ruthenium complexes (2 3) are isolated when reaction conducted at room temperature, whereas tris-acetonitrile ruthenium(II) were elevated temperatures. iodide anion 4 5 easily replaced tetrakis(3,5-bis(trifluoromethyl)phenyl)borate (BArF′) by silver (Ag[BArF′]) [(BPA)Ru(NCMe)3][BArF′] (6) [(BMPA)Ru(NCMe)3)][BArF′] (7), which demonstrate improved solubility organic solvents as compared 5. acetonitrile ligands cis carboxylate group significantly more labile than trans ligand. rate dissociation for found be statistically equivalent. These characterized 1H, 13C, 19F nuclear magnetic resonance spectroscopy, infrared elemental analyses. Compounds 2, 4, 5, 7 also single crystal X-ray crystallography.
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