5% of the X-ray values), while accurate transition energies were limited to those calculated in the UV spectral region. The complexes had variable stability in dimethyl sulfoxide: compound 3 (relatively rigid) was indefinitely stable, compounds 1 and 2 (conformationally flexible) slowly demetalated over 30 days, and 4 (extensively aromatic) formed an insoluble precipitate after 10 days (72 h in an aqueous
的结构中,光谱,和4个新的标称正方形平面
金(III)的细胞毒性螯合1 - 4与通式CIS -AuCl 2(X),其中
配体X为阴离子二齿
吡啶基-或isoquinolylamido
螯合剂,是描述。Au–N酰胺基,Au–N
吡啶基和Au–N
异喹啉基的距离分别为2.002(9)–2.016(3),2.01(1)–2.037(3)和2.037(3)Å。密度泛函理论模拟提供准确
金(三)协调几何形状1 - 4(键的距离和角度在X射线值的5%以内),而准确的跃迁能量仅限于在UV光谱区域中计算出的跃迁能量。配合物在
二甲亚砜中具有不同的稳定性:化合物3(相对刚性)无限稳定,化合物1和2(结构柔韧性)在30天内缓慢脱
金属,而4(广泛芳香族)在10天(72 h沸腾)后形成不溶性沉淀。
水性缓冲液)。异喹酰胺基衍
生物4在NCI-60筛选中具有足够的细胞毒性,可以进行完整的五剂量试验。GI 50(1.8、2.3和3.2μM)和IC