Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States.
Inorg Chem. 2012 Jul 2;51(13):7004-6. doi: 10.1021/ic300160c. Epub 2012 Jun 6.
Hydrotris(triazolyl)borate (Ttz) ligands form CuNO(x) (x = 2, 3) complexes for structural and functional models of copper nitrite reductase. These complexes have distinct properties relative to complexes of hydrotris(pyrazolyl)borate (Tp) and neutral tridentate N-donor ligands. The electron paramagnetic resonance spectra of five-coordinate copper complexes show rare nitrogen superhyperfine couplings with the Ttz ligand, indicating strong σ donation. The copper(I) nitrite complex PPN(Ttz(tBu,Me))Cu(I)NO(2) has been synthesized and characterized and allows for the stoichiometric reduction of NO(2)(-) to NO with H(+) addition. Anionic Cu(I) nitrite complexes are unusual and are stabilized here for the first time because Ttz is a good π acceptor.
三(三唑基)硼酸盐（Ttz）配体形成 CuNO(x)（x = 2,3）配合物，作为铜亚硝酸盐还原酶的结构和功能模型。与三(吡唑基)硼酸盐（Tp）和中性三齿 N 供体配体的配合物相比，这些配合物具有独特的性质。五配位铜配合物的电子顺磁共振谱显示与 Ttz 配体的罕见氮超精细耦合，表明强 σ 供体。已合成并表征了铜（I）亚硝酸盐配合物PPN(Ttz(tBu,Me))Cu(I)NO(2)，并允许通过添加 H(+)进行亚硝酸盐（NO(2)(-)）的化学计量还原。阴离子铜（I）亚硝酸盐配合物很不常见，此处首次稳定存在，因为 Ttz 是一个良好的 π 受体。
