Halper Sara R, Cohen Seth M
Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA.
Chemistry. 2003 Oct 6;9(19):4661-9. doi: 10.1002/chem.200305041.
The synthesis, structure, and spectroscopic characterization of a series of phenylacetylenylene rodlike molecules containing dipyrromethene (dipyrrin) ligands are described. The combination of the phenylacetylenylene groups with the porphyrinogenic dipyrrin moieties results in a rich absorption spectroscopy for these compounds, although the fluorescence of the phenylacetylenylene moiety is quenched by presence of the dipyrrin chelator. The Cu(2+) and Fe(3+) complexes of these ligands have been prepared and three of these compounds have been structurally characterized by using single-crystal X-ray diffraction. Unlike other octahedral metal-dipyrrin complexes described to date, one of the iron complexes demonstrates ideal threefold symmetry in the solid-state. The elongated structure and high symmetry of these complexes suggests the use of these meso-substituted phenylacetylenylene ligands as an interesting class of extended, branched molecules for the construction of supramolecular architectures.
描述了一系列含有二吡咯亚甲基（二吡咯）配体的苯乙炔类棒状分子的合成、结构和光谱表征。苯乙炔基团与卟啉生成性二吡咯部分的结合导致这些化合物具有丰富的吸收光谱，尽管苯乙炔部分的荧光因二吡咯螯合剂的存在而猝灭。制备了这些配体的Cu(2+)和Fe(3+)配合物，其中三种化合物通过单晶X射线衍射进行了结构表征。与迄今为止描述的其他八面体金属 - 二吡咯配合物不同，其中一种铁配合物在固态中表现出理想的三重对称性。这些配合物的细长结构和高对称性表明，这些中位取代的苯乙炔配体可作为一类有趣的扩展、支化分子用于构建超分子结构。
