N-烷氧基杂环在光化学电子转移反应中可以作为强大的单电子受体。这些物质的单电子还原导致形成自由基,该自由基经历 NO 键断裂以形成烷氧基自由基和中性杂环。已经确定了一系列具有不同取代基和离域程度的自由基的 NO 键断裂反应的动力学。获得了超过 7 个数量级变化的速率常数。描述了涉及避免锥形相交的反应势能表面。根据重要分子轨道的能量与反应势能面之间的关系,给出了反应速率常数随自由基结构变化的分子基础。
Interfacial halogen bonding probed using force spectroscopy
作者:Meital Boterashvili、Tanya Shirman、Sidney R. Cohen、Guennadi Evmenenko、Pulak Dutta、Petr Milko、Gregory Leitus、Michal Lahav、Milko E. van der Boom
DOI:10.1039/c3cc40378e
日期:——
Halogen bonding between complementary organic monolayers was directly observed in an organic environment using force spectroscopy. This non-covalent interaction is significantly affected by the nature of the organic media. We also demonstrated the effect of lateral packing interactions on the optical properties of the monolayers.
Halogen Bonding: A Supramolecular Entry for Assembling Nanoparticles
作者:Tanya Shirman、Talmon Arad、Milko E. van der Boom
DOI:10.1002/anie.200905984
日期:2010.1.25
A new glue: Supramolecular assembly of gold nanoparticles (AuNPs, see picture) mediated by halogenbonding interactions is demonstrated. The primary time‐dependent assembly of functionalized AuNPs controls the inner structure, whereas the appearance of the overall hybrid structures can be engineered by varying the concentration of the organic linker.
Combination of Argentophilic and Perfluorophenyl-Perfluorophenyl Interactions Supports a Head-to-Head [2 + 2] Photodimerization in the Solid State
作者:Michael A. Sinnwell、Jonas Baltrusaitis、Leonard R. MacGillivray
DOI:10.1021/cg501571u
日期:2015.2.4
Face-to-face perfluorophenylperfluorophenyl interactions (C6F5 center dot center dot center dot C6F5) are achieved in a disilver metalorganic complex. The C6F5 center dot center dot center dot C6F5 interactions along with argentophilic forces support trans-pentafluorostilbazole to undergo a head-to-head [2 + 2] photodimerization to form a cyclobutane that sustains a fluorinated two-dimensional metalorganic framework.
Role of hydrogen bonds in molecular packing of photoreactive crystals: templating photodimerization of protonated stilbazoles in crystalline state with a combination of water molecules and chloride ions
photobehavior and molecular packing between hydrated and anhydrous crystals of protonated trans-stilbazoles has been identified. While stilbazoles are not photoreactive in the crystalline state, upon protonation with HCl in the solidstate they dimerized to a single dimer (anti-head-tail) when exposed to UV light. In these photoreactivecrystals the protonated stilbazole molecules are arranged in a ladder-like
Kinetics of Reductive N−O Bond Fragmentation: The Role of a Conical Intersection
作者:Edward D. Lorance、Wolfgang H. Kramer、Ian R. Gould
DOI:10.1021/ja020768e
日期:2002.12.1
N-alkoxyheterocycles can act as powerful one-electron acceptors in photochemical electron-transfer reactions. One-electron reduction of these species results in formation of a radical that undergoes N-O bond fragmentation to form an alkoxy radical and a neutral heterocycle. The kinetics of this N-O bond fragmentationreaction have been determined for a series of radicals with varying substituents and extents of
N-烷氧基杂环在光化学电子转移反应中可以作为强大的单电子受体。这些物质的单电子还原导致形成自由基,该自由基经历 NO 键断裂以形成烷氧基自由基和中性杂环。已经确定了一系列具有不同取代基和离域程度的自由基的 NO 键断裂反应的动力学。获得了超过 7 个数量级变化的速率常数。描述了涉及避免锥形相交的反应势能表面。根据重要分子轨道的能量与反应势能面之间的关系,给出了反应速率常数随自由基结构变化的分子基础。