合成了具有柔性桥的新双核炔基铂(II)吡啶基配合物,并通过1 H NMR,质谱和元素分析对其进行了表征。这些化合物可通过多种分子间相互作用(例如金属-金属(Pt⋯Pt)和π-π堆积相互作用,氢键相互作用和范德华力)而胶凝各种有机溶剂,这些现象已被紫外可见(UV- vis)吸收光谱,流变学,温度依赖性1 H NMR光谱,X射线衍射(XRD)和傅立叶变换红外(FT-IR)光谱。此外,化合物1b具有更长的柔性桥(–O(CH 2)6O-)的胶凝能力比具有较短柔性桥(-O(CH 2)4 O-)的化合物1a更高。扫描电子显微镜(SEM)对来自不同有机溶剂的干凝胶的观察显示出图像,表明原纤维聚集体纠缠在三维网络结构中。
合成了具有柔性桥的新双核炔基铂(II)吡啶基配合物,并通过1 H NMR,质谱和元素分析对其进行了表征。这些化合物可通过多种分子间相互作用(例如金属-金属(Pt⋯Pt)和π-π堆积相互作用,氢键相互作用和范德华力)而胶凝各种有机溶剂,这些现象已被紫外可见(UV- vis)吸收光谱,流变学,温度依赖性1 H NMR光谱,X射线衍射(XRD)和傅立叶变换红外(FT-IR)光谱。此外,化合物1b具有更长的柔性桥(–O(CH 2)6O-)的胶凝能力比具有较短柔性桥(-O(CH 2)4 O-)的化合物1a更高。扫描电子显微镜(SEM)对来自不同有机溶剂的干凝胶的观察显示出图像,表明原纤维聚集体纠缠在三维网络结构中。
New binuclear alkynylplatinum(II) terpyridyl complexes with flexible bridges have been synthesized and characterized by 1H NMR, mass spectra and elemental analysis. These compounds can gelate a variety of organic solvents via multiple intermolecular interactions such as metal–metal (Pt⋯Pt) and π–π stacking interactions, hydrogen bonding interactions, and van der Waals forces, which were confirmed by
合成了具有柔性桥的新双核炔基铂(II)吡啶基配合物,并通过1 H NMR,质谱和元素分析对其进行了表征。这些化合物可通过多种分子间相互作用(例如金属-金属(Pt⋯Pt)和π-π堆积相互作用,氢键相互作用和范德华力)而胶凝各种有机溶剂,这些现象已被紫外可见(UV- vis)吸收光谱,流变学,温度依赖性1 H NMR光谱,X射线衍射(XRD)和傅立叶变换红外(FT-IR)光谱。此外,化合物1b具有更长的柔性桥(–O(CH 2)6O-)的胶凝能力比具有较短柔性桥(-O(CH 2)4 O-)的化合物1a更高。扫描电子显微镜(SEM)对来自不同有机溶剂的干凝胶的观察显示出图像,表明原纤维聚集体纠缠在三维网络结构中。
Bimetallic Cu2+ complexes of bis-terpyridine ligands as catalysts of the cleavage of mRNA 5′-cap models. The effect of linker length and base moiety
Ligands, where two terpyridine units are linked via an alkyl chain of three to five methylene units, have been synthesized. Their Cu2+ complexes have been studied as catalysts for the hydrolysis of the triphosphate bridge of three different dinucleoside triphosphates. The results show that the bimetallic complexes are up to 600 times more efficient catalysts than monomeric Cu2+-TerPy, and up to 5 Ã 105-fold rate enhancement in comparison to the uncatalysed reaction, is achieved. However, the catalytic activity strongly depends on the length of the linker and the base composition of the substrate. The differences can be attributed to interactions between the Cu2+-TerPy and nucleic acid base moieties as well as steric factors that may hinder the productive interaction between the substrate and the catalyst.