Synthesis, spectroscopic, thermal, antimicrobial and electrochemical characterization of some novel Ru(<scp>iii</scp>), Pt(<scp>iv</scp>) and Ir(<scp>iii</scp>) complexes of pipemidic acid
作者:Khuloud A. Alibrahim、Foziah A. Al-Saif、M. T. Alghamdi、M. S. El-Shahawi、Y. M. Moustafa、Moamen S. Refat
DOI:10.1039/c8ra03879a
日期:——
(TG, DTG). The DTG curves refer to 2–3 thermal decomposition steps where the first decomposition step at a lower temperature corresponds to the loss of uncoordinated water molecules followed by the decomposition of Pip–H molecules at higher temperatures. Thermodynamic parameters (E*, ΔS*, ΔH* and ΔG*) were calculated from the TG curves using Coats–Redfern and Horowitz–Metzeger non-isothermal models
合成并表征了哌啶酸(Pip–H)与Ru 3+、Pt 4+和Ir 3+的三种新固体配合物。哌啶酸通过 –NH 哌嗪环的氮原子充当单齿螯合剂。光谱数据表明Pip-H配合物的通式为[M(L) n (Cl) x ]· y H 2 O (( 1 ) M = Ru 3+ , L: Pip-H, n = 3, x = 3, y = 6; ( 2 ) M = Pt 4+ , L: Pip–NH 4 , n = 2, x = 4, y = 0 且 ( 3 ) M = Ir 3+ , L: Pip–H ,n = 3,x = 3,y = 6)。通过热分析(TG、DTG)分配水分子的数量及其在配位球内部或外部的位置。DTG 曲线涉及 2-3 个热分解步骤,其中较低温度下的第一个分解步骤对应于不配位水分子的损失,随后是较高温度下 Pip-H 分子的分解。使用 Coats–Redfern 和 Horowitz–Metzeger