Silver(I) and Copper(I) Adducts of a Tris(pyrazolyl)borate Decorated with Nine Trifluoromethyl Groups

• Published in: Inorganic chemistry Vol. 52; no. 4; pp. 1691 - 1693
• Main Authors: Jayaratna, Naleen B, Gerus, Igor I, Mironets, Roman V, Mykhailiuk, Pavel K, Yousufuddin, Muhammed, Dias, H. V. Rasika
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 18.02.2013
• Subjects: Borates - chemistry; Chlorofluorocarbons, Methane - chemistry; Copper - chemistry; Models, Molecular; Molecular Structure; Organometallic Compounds - chemical synthesis; Organometallic Compounds - chemistry; Pyrazoles - chemistry; Silver - chemistry
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/ic302715d

Silver and copper ethylene adducts and the silver carbonyl complex of the tris(pyrazolyl)borate [HB(3,4,5-(CF3)3Pz)3]− (which is based on one of the most acidic pyrazoles known) have been synthesized. 13C NMR resonance signals of metal-bound ethylene carbon atoms of [HB(3,4,5-(CF3)3Pz)3]Ag(C2H4) and [HB(3,4,5-(CF3)3Pz)3]Cu(C2H4) appear at δ 111.6 and 94.9, respectively. The CO stretching frequency of the silver adduct [HB(3,4,5-(CF3)3Pz)3]Ag(CO) is significantly higher than that of free CO, but it appears at a region less sensitive to the ligand electronic effects of tris(azolyl)borate silver adducts.