合成並鑑定含有N6O2八牙配位基之三銅(II)金屬錯合物

Abstract

甲烷氧化菌利用甲烷作為其主要的能源。甲烷單加氧酶微粒（pMMO）是一個鑲嵌在細胞膜上的含金屬酶，這個蛋白質可以催化甲烷變成甲醇。銅離子在pMMO的催化中心扮演重要的角色。因此我們成功的合成含有N6O2的八牙配位基並且鑑定此八牙配位基具有三個金屬配位的空間形成三銅錯合物。我們透過紅外光共振光譜儀(IR)、紫外光-可見光光譜(UV-Vis spectroscopy)、高解析電噴灑質譜儀(HR-ESI-MS)、元素分析(elemental analysis)、導電度測量(conductivity measurement)、電子自旋共振光譜(EPR)及超導量子干涉磁化儀(SQUID)鑑定包含此八牙配位基的三銅錯合物。我們可以確認三銅錯合物的化學式為〔(CuII)3(L)(μ-OH-)〕(ClO4-)3。

Methanotrophic bacteria use methane as their primary source of energy and particulate methane monooxygenase (pMMO) is an integral membrane metalloenzyme that catalyses the conversion of methane to methanol. Copper plays a critical role in the active center of the pMMO enzymes. New tricopper (II) model derivatives of octadentate ligands of N6O2 combination for the donor atoms have been successfully synthesized, and the structure characterization of ligands contains three binding sites for copper (II) ions is studied. The tricopper (II) complexes with octadentate ligand have been characterized by infrared spectroscopy (IR), UV-Vis spectroscopy, HR-ESI-MS, elemental analysis, conductivity measurement, electron paramagnetic resonance (EPR) and SQUID. We could conclude the chemical formula of tricopper (II) complexes as 〔(CuII)3(L)(μ-OH-)〕(ClO4-)3.