Anion-recognition studies of a Re(<scp>i</scp>)-based square containing the dipyridyl-amide ligand

Tzeng, Biing‐Chiau; Chen, Yen-Fei; Wu, Chia Chin; Hu, Cho-Chun; Chang, Ya-Ting; Chen, Chang-Kai

doi:10.1039/b613508k

Cited by 53 publications

(21 citation statements)

References 68 publications

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“…In the asymmetric unit there is a doublely protonated L molecule, and half an isopolyoxometalate unit. The bond distances and angles in the cation are similar to those observed previously for N 1 ,N 2 -di(pyridin-4-yl)oxalamide (Tzeng, et al, 2007). For the anion, [Mo 8 O 26 ] 4-, the geometrical parameters are similar to those reported by (Gong, et al, 2007).…”

Section: Data Collectionsupporting

confidence: 77%

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Bis{4,4′-[oxalylbis(azanediyl)]dipyridinium} octamolybdate

Qin

Dong

et al. 2010

Acta Cryst E

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Section: Data Collectionsupporting

confidence: 77%

“…For the applications of POMs in biology and materials sciences, see: Cui et al (2003); Luan et al (2002); Wang et al (2003). For the structure of N 1 ,N 2 -di(pyridin-4-yl)oxalamide, see : Tzeng et al (2007). For details of the geometrical parameters in the same isopolyoxometalate anion, see: Gong et al (2007).…”

Section: Related Literaturementioning

confidence: 99%

Bis{4,4′-[oxalylbis(azanediyl)]dipyridinium} octamolybdate

Qin

Dong

et al. 2010

Acta Cryst E

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“…Arene-ruthenium acceptors ( 1 [16c] and 2 [16i] ) and donor 3 [1k] were prepared according to reported methods. Deuterated solvents were purchased from Cambridge Isotope Laboratory (Andover, MA).…”

Section: Methodsmentioning

confidence: 99%

“…[1] Among the anions, multi-carboxylates [2] are an important and essential class of oxy anions found in nature. For example, the oxalate anion plays an important role in the functioning of the human body, as quite a number of diseases are associated with the disruption of oxalate exchange.…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembled Arene–Ruthenium‐Based Rectangles for the Selective Sensing of Multi‐Carboxylate Anions

Vajpayee

Song

Lee

et al. 2011

Chemistry A European J

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Novel arene-ruthenium [2+2] metalla-rectangles, 4 and 5, were synthesized by the self-assembly approach using a dipyridyl amide ligand (3) and arene-ruthenium acceptors (arene: benzoquinone (1); naphthacenedione (2)), and characterized by NMR and ESI-MS. The solid-state structure of 5 determined by X-ray diffraction shows the encapsulated diethyl ether molecules in the rectangular cavity of 5. The luminescent 5 was further utilized for anion sensing where the amidic linkage serves as a hydrogen bond donor site for anions, and the ruthenium moiety serves as a signaling unit. A UV-vis titration study demonstrates that, while 5 interacts very weakly with the common mono anions as well as flexible dicarboxylate anions such as malonate and succinate, it displays significant binding affinity (K > 103 in MeOH) for the rigid multi-carboxylate anions such as oxalate, citrate, and tartrate in a 1:1 fashion. It is suggested that the 1:1 bidentate hydrogen bonding assisted by the proper geometrical complementarities is mainly responsible for the increased affinity of 5 towards such anions. In particular, a fluorescence titration study reveals a large fluorescence enhancement of 5 upon binding with multi-carboxylate anions. This indicates that the fluorescence enhancement is attributed to the blocking of the photo-induced electron transfer process from the arene-Ru moiety to the amidic donor in 5 as a result of hydrogen bonding between the donor and the anion.

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“…[31][32][33] One family of metal complexes that has shown considerable promise in the design of emissive sensors has been that of the fac-rhenium(I) tricarbonyl diimine fragment, where the sixth coordination site can accommodate either a neutral ligand to give a monovalent cation, or a halide to provide a neutral complex. Anion recognition has been observed in a variety of complexes, [34][35][36][37][38][39][40] and previously we have…”

Section: Introductionmentioning

confidence: 99%