4′-Functionalized 2,2′:6′,2″-terpyridines as the NˆN domain in [Ir(CˆN)2(NˆN)][PF6] complexes
作者:Daniel P. Ris、Gabriel E. Schneider、Cathrin D. Ertl、Emanuel Kohler、Thomas Müntener、Markus Neuburger、Edwin C. Constable、Catherine E. Housecroft
DOI:10.1016/j.jorganchem.2015.08.021
日期:2016.6
complexes [Ir(ppy)2(NˆN)][PF6] (Hppy = 2-phenylpyridine) with NˆN = 4′-chloro-2,2′:6′,2″-terpyridine (1), 4′-methoxy-2,2′:6′,2″-terpyridine (2), 4′-ethoxy-2,2′:6′,2″-terpyridine (3), 4′-methylthio-2,2′:6′,2″-terpyridine (4), 4′-phenylthio-2,2′:6′,2″-terpyridine (5) and 4′-dimethylamino-2,2′:6′,2″-terpyridine (6) are reported including the single crystal structures of 2[Ir(ppy)2(1)][PF6]}·0.6Et2O·CH2Cl2
there is an increasing attention towards the use of Ru(II) polypyridyl complexes. Most studies in the literature were made on complexes based on the coordination of N-donating bidentate ligands to the ruthenium core whereas studies on 2,2':6', 2″-terpyridine (terpy) coordinating ligands are relatively scare. However, several studies have shown that [Ru(terpy)2]2+ derivatives are able bind to DNA through
General Synthesis of Di-μ-oxo Dimanganese Complexes as Functional Models for the Oxygen Evolving Complex of Photosystem II
作者:Hongyu Chen、Ranitendranath Tagore、Siddhartha Das、Christopher Incarvito、J. W. Faller、Robert H. Crabtree、Gary W. Brudvig
DOI:10.1021/ic0509940
日期:2005.10.1
water, is a functional model for the oxygen-evolving complex of photosystem II (Limburg, et al. J. Am. Chem. Soc. 2001, 123, 423-430). Crystals of Mn(II)(dpya)Cl2, Mn(II)(Ph-terpy)Cl2, Mn(II)(mesityl-terpy)Cl2, and an organic-soluble di-mu-oxo di-aqua dimanganesecomplex, [Mn(III/)(IV)2(mu-O)2(mesityl-terpy)2(OH2)2](NO3)3, were obtained and characterized by X-ray crystallography. Solutions of the in situ-formed
Synthesis, Photophysics, and Reverse Saturable Absorption of <i>trans</i>-Bis-cyclometalated Iridium(III) Complexes (C^N^C)Ir(R-tpy)<sup>+</sup> (tpy = 2,2′:6′,2″-Terpyridine) with Broadband Excited-State Absorption
作者:Bingqing Liu、Mohammed A. Jabed、Svetlana Kilina、Wenfang Sun
DOI:10.1021/acs.inorgchem.0c00961
日期:2020.6.15
photophysics of these complexes have been systematically explored using spectroscopic methods (i.e., UV–vis absorption, emission, and transient absorption spectroscopy) and time-dependent density functional theory (TDDFT) calculations. All complexes exhibited intensely structured 1π,π* absorptionbands at <400 nm and broad charge transfer (1CT)/1π,π* transitions at 400–600 nm. Ligand structural variations
Several series of 4-nitro-6-bromo-2,2′-bipyridines and of symmetrical and unsymmetrical 4′-nitro- and 4′-amino- 2,2′:6′,2″-terpyridines have been prepared. The structure of 4′-amino-2,2′:6′,2″-terpyridine has been determined by X-ray structure analysis. The unusual internal angles of the two terminal rings with respect to the central one have been rationalized in terms of hydrogen bonding between the