Manganese(II), cobalt(II), nickel(II) and copper(II) complexes with 1,5,11,15-tetraaza-21,22-dioxo-tricyclo [19,3,1,I^6,10]-5,10,15-20-dicosatetraene (L), as a new macrocyclicligand, have been synthesized with and characterized by elemental analysis, molar conductance measurements, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies. The molar conductance measurements of the complexes in DMF correspond to non-electrolytic nature of Mn(II), Co(II) and Cu(II) complexes, while showing a 1:2 electrolyte for thew Ni(II) complexe. Thus, these complexes may be formulated as [M(L)X₂] and [Ni(L)]X₂ (where M = Mn(II), Co(II) and Cu(II) and X = Cl^- and NO₃ ^-). On the basis of IR, electronic and EPR spectral studies, an octahedral geometry has been assigned for Mn(II) and Co(II), a square planar for Ni(II) and tetragonal for Cu(II) complexes. In vitro ligand and its metal complexes were also screened against the growth of some fungal and bacterial species in order to assess their antimicrobial properties.

中文翻译：

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叔氮杂大环配体的Mn（II），Co（II），Ni（II）和Cu（II）配合物：合成，表征和生物学筛选

锰（II），钴（II），镍（II）和铜（II）与1,5,11,15-四氮杂-21,22-二氧代三环[19,3,1，I ^6,10 ]的配合物-5,10,15-20-二十二碳四烯（L），作为一种新的大环配体，已通过元素分析，摩尔电导测量，磁化率测量，质量，IR，电子和EPR光谱研究合成并表征。在DMF中，配合物的摩尔电导测量结果与Mn（II），Co（II）和Cu（II）配合物的非电解性质相对应，同时显示出Ni（II）配合物的1：2电解质。因此，这些复合物可被配制为[M（L）X ₂ ]和[镍（L）] X ₂（其中，M =锰（II），钴（II）和Cu（II）和X =氯^-和NO ₃ ^-）。根据红外，电子和EPR光谱研究，已为Mn（II）和Co（II）分配了八面体几何形状，为Ni（II）分配了正方形平面，而为Cu（II）络合物分配了四边形。还针对某些真菌和细菌种类的生长对体外配体及其金属配合物进行了筛选，以评估其抗菌性能。