【摘要】 利用4-(4-(9-蒽基)苯基)-3,5-二甲基-吡唑配体(L)与不同的双金属组装单元合成了一类新颖的配位分子角[M2L2]([(bpy)Pd]2L2,1;[(dmbpy)Pd]2L2,2;[(phen)Pd]2L2,3;[(ppy)Pt]2L2,4,其中bpy=2,2′-联吡啶,dmbpy=4,4′-二甲基-2,2′-联吡啶,phen=1,10-菲咯啉,ppy=2-苯基吡啶)。结果表明这类配位分子角是通过金属-金属成键作用与吡唑基团自发去质子的协同作用自组装形成。利用单晶X-射线衍射,1H和13C NMR,ESI-MS和荧光光谱等测试手段对配合物1~3的结构进行了测定。同时,电中性的有机金属分子角[(ppy)Pt]2L2(4)的结构也通过1H和13C NMR,质谱和荧光光谱等手段进行了表征。运用不同的非手性双金属组装中心同非手性配体L,自组装得到的3个非手性配位分子角的晶体结构差别很大,特别是由[(phen)Pd]2组装中心形成的配位分子角3结晶得到了超分子手性构筑。更多还原

【Abstract】 A novel kind of coordination molecular corners [M2L2]([1=(bpy)Pd]2L2, 2=[(dmbpy)Pd]2L2, 3=[(phen)Pd]2L2,4=[(ppy)Pt]2L2, where bpy=2,2′-bipyridine, dmbpy=4,4′-dimethyl-2,2′-bipyridine, phen=1,10-phenanthroline, ppy=2-phenylpyridine) was synthesized through synergistic metal-metal bonding interaction and spontaneous deprotonation from the pyrazole linkers 4-(4-(anthracen-9-yl)phenyl)-3,5-dimethyl-1H-pyrazole(L). Three complexes 1~3 were characterized by single crystal X-ray diffraction,1H and13 C NMR, ESI-MS and fluorescence spectroscopy. The neutral organometallic corner [(ppy)Pt]2L24 was also determined by1 H and13C NMR, MALDITOF-MS and fluorescence spectroscopy. These achiral molecular corners assemble from different achiral dimetallic centers with the achiral ligand HL in quite different crystal structures, in particular, 3 with a [(phen)Pd]2assembling center crystallizes into a supramolecular chiral architecture.更多还原