两种大环四内酰胺受体显示出选择性地封装金 (III)、铂 (II) 和钯 (II) 的阴离子、方形平面氯化物和溴化物配位络合物。两种受体都具有与其贵金属客体互补的预先组织的结构。受体不直接连接客体金属中心,而是提供一系列与带正电金属相互作用的芳烃 π 电子供体和与外部带负电配体相互作用的氢键供体。这种独特的超分子识别模式通过六个 X 射线晶体结构来说明,这些晶体结构显示了 AuCl4-、AuBr4-、PtCl4-2 或 Pd2Cl6-2 的受体封装。在有机溶液中,1:1 的缔合常数与在固态中识别的特定超分子特征相关。
两种大环四内酰胺受体显示出选择性地封装金 (III)、铂 (II) 和钯 (II) 的阴离子、方形平面氯化物和溴化物配位络合物。两种受体都具有与其贵金属客体互补的预先组织的结构。受体不直接连接客体金属中心,而是提供一系列与带正电金属相互作用的芳烃 π 电子供体和与外部带负电配体相互作用的氢键供体。这种独特的超分子识别模式通过六个 X 射线晶体结构来说明,这些晶体结构显示了 AuCl4-、AuBr4-、PtCl4-2 或 Pd2Cl6-2 的受体封装。在有机溶液中,1:1 的缔合常数与在固态中识别的特定超分子特征相关。
Luminescent reporter compounds that are rotaxanes having the structure
where B—Z—C is a reporter molecule based on a cyanine, squaric acid, or other reporter, and K is a macrocycle that encircles and interlocks with the reporter molecule. Applications of the reporter compounds are provided, as well as reactive intermediates used to synthesize the reporter compounds, and methods of synthesizing the reporter compounds.
Supramolecular Paradigm for Capture and Co‐Precipitation of Gold(III) Coordination Complexes
作者:Cassandra C. Shaffer、Wenqi Liu、Allen G. Oliver、Bradley D. Smith
DOI:10.1002/chem.202003680
日期:2021.1.7
(HAuX4) from organic solvents or water. Two classes of acyclic organic compounds act as complementary receptors (tectons) by forming two sets of directional non‐covalent interactions, (a) hydrogen bonding between amide (or amidinium) NH residues and the electronegative X ligands on the AuX4−, and (b) electrostatic stacking of the electrondeficient Au center against the face of an aromatic surface