Fine-Tuning the Weak-Link Approach: Effect of Ligand Electron Density on the Formation of Rhodium(I) and Iridium(I) Metallomacrocycles
作者:Martin S. Masar、Maxim V. Ovchinnikov、Chad A. Mirkin、Lev N. Zakharov、Arnold L. Rheingold
DOI:10.1021/ic034393p
日期:2003.10.1
synthesized. This ligand has been used to prepare symmetric bimetallic structures with Rh(I) and Ir(I) metal centers in high yield. Unlike their nonfluorinated counterparts, these complexes can be opened into large macrocyclic structures through straightforward ligand (i.e., carbon monoxide, nitriles, and isocyanides) substitution reactions at the metal-thioether linkage. In addition, the symmetric bimetallic
Binuclear Copper(I) Macrocycles Synthesized via the Weak-Link Approach
作者:Martin S. Masar、Chad A. Mirkin、Charlotte L. Stern、Lev N. Zakharov、Arnold L. Rheingold
DOI:10.1021/ic049658u
日期:2004.7.1
into these macrocycles provides a pathway to complexes that differ from analogous d8 square planar macrocycles generated via this approach in their increased air stability, small molecule reactivity, and ability to form multiple structural isomers. Solid-state structures, as determined by single-crystal X-ray diffraction studies, are presented for condensed intermediates and an open macrocycle
弱链接方法已被用来以高收率合成一系列双金属Cu(I)大环。将膦烷基烷基醚或-硫醚配体加至[Cu(MeCN)4] PF6会产生“缩合”中间体[mu-(1,4-(PPh2CH2CH2X)2Y)2Cu2] [PF6] 2(X = S,O; Y = C6H4,C6F4),包含强P-Cu键和较弱的O-Cu或S-Cu键。这些中间体的弱键可以通过配体取代反应裂解,生成大环结构[mu-(1,4-(PPh2CH2CH2X)2Y)2(Z)nCu2] [PF6] 2(X = S,O; Y = C6H4,C6F4; Z =吡啶,乙腈,二亚胺,异氰化物)的定量收率基本相同。将四面体Cu(I)金属中心并入这些大环化合物为复合物提供了一条途径,该复合物与通过该方法生成的类似d8方形平面大环化合物在增加的空气稳定性方面有所不同,小分子反应性,以及形成多种结构异构体的能力。通过单晶X射线衍射研究确定的固态结构,用于缩合中间体和开放大环化合物
General Strategy for the Synthesis of Rigid Weak-Link Approach Platinum(II) Complexes: Tweezers, Triple-Layer Complexes, and Macrocycles
作者:Robert D. Kennedy、Charles W. Machan、C. Michael McGuirk、Mari S. Rosen、Charlotte L. Stern、Amy A. Sarjeant、Chad A. Mirkin
DOI:10.1021/ic302855f
日期:2013.5.20
(P,S–C6F4H) hemilabile ligand is used as the weakly chelating counterpart. The HILR reaction has also been used to synthesize bisplatinum(II) macrocycles free of oligomeric material without having to resort to the high-dilution conditions typical for macrocycle synthesis. This approach is complementary to the traditional WLA to the synthesis of macrocyclic complexes which typically proceeds via fully