论文部分内容阅读
研究了Sr~(2+),Ca~(2+),Zn~(2+),Co~(2+),Ni~(2+)和Cu~(2+)等二价金属离子的二苯基乙醇酸络合物的红外光谱.用氘代化合物帮助指定OH基变形振动和COO~-基对称伸缩振动v_a(COO~-)。COO~-基不对称伸缩振动v_(as)(COO~-)与v_s(COO~-)的差值大致按以上次序增大,说明金属离子与羧根之间键的共价性增加.α-OH基与金属离子之间形成配位键之后,其伸缩频率大大降低,预示了这个α-OH基具有酸性.
The effects of divalent metal ions such as Sr2 +, Ca2 +, Zn2 +, Co2 +, Ni2 + and Cu2 + Infrared Spectroscopy of Phenylglycolic Acid Complexes Using Deuterated Compounds Assisted Designation of OH - based Vibrational Modifications and COO ~ - Symmetric Scattering v_a (COO ~ -). The difference between v_ (as) (COO ~ -) and v_s (COO ~ -) of COO ~ - based asymmetric stretching vibration increases roughly in the above order, indicating that the covalent bond between the metal ion and the carboxyl group increases. The formation of coordination bonds between the -OH groups and the metal ions greatly decreases the stretching frequency, indicating that this α-OH group is acidic.