Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States.
Inorg Chem. 2013 Feb 18;52(4):1691-3. doi: 10.1021/ic302715d. Epub 2013 Jan 31.
Silver and copper ethylene adducts and the silver carbonyl complex of the tris(pyrazolyl)borate HB(3,4,5-(CF(3))(3)Pz)(3) (which is based on one of the most acidic pyrazoles known) have been synthesized. (13)C NMR resonance signals of metal-bound ethylene carbon atoms of [HB(3,4,5-(CF(3))(3)Pz)(3)]Ag(C(2)H(4)) and [HB(3,4,5-(CF(3))(3)Pz)(3)]Cu(C(2)H(4)) appear at δ 111.6 and 94.9, respectively. The CO stretching frequency of the silver adduct [HB(3,4,5-(CF(3))(3)Pz)(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.
已经合成了银和铜的乙烯加合物以及三（吡唑基）硼酸盐[HB(3,4,5-(CF(3))(3)Pz)(3)]-（基于已知的最酸性吡唑之一）的银羰基配合物。[HB(3,4,5-(CF(3))(3)Pz)(3)]Ag(C(2)H(4))和[HB(3,4,5-(CF(3))(3)Pz)(3)]Cu(C(2)H(4))中金属结合的乙烯碳原子的(13)C NMR 共振信号分别出现在δ 111.6 和 94.9。银加合物[HB(3,4,5-(CF(3))(3)Pz)(3)]Ag(CO)的 CO 伸缩频率明显高于游离 CO，但它出现在对三（唑基）硼酸盐银加合物的配体电子效应不太敏感的区域。
