Comparative study of non-covalent interactions between cationic N-phenylviologens and halides by electrochemistry and NMR: the halogen bonding effect

Creste, Geordie; Groni, Sihem; Fave, Claire; Branca, Mathieu; Schöllhorn, Bernd

doi:10.1039/c7fd00082k

Cited by 12 publications

(6 citation statements)

References 44 publications

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“…We attempted to verify the availability of the XBs in solutions and studied electrochemical behavior of 1−3 upon the addition of FIB in CH 2 Cl 2 solution by cyclic and differential pulse voltammetry techniques. 91,92 We used 1:20 molar ratios between any one of 1−3 and FIB to minimize competitive complex−solvent interactions, also those with the supporting electrolyte. In contrast to the previously studied adducts of FIB with the half-lantern Pt II 2 species displaying clear XB in solution, 31 no significant changes in oxidation potentials were observed conceivably because of the low concentration of the XB adducts in solution.…”

Section: Resultsmentioning

confidence: 99%

Halogen Bonding Involving Palladium(II) as an XB Acceptor

Катленок

Rozhkov

Levin

et al. 2020

Crystal Growth & Design

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The half-lantern PdII 2 complexes trans-(O,C)-[Pd(ppz)(μ-O∩N)]2 (1) and trans-(E,N)-[Pd(ppz)(μ-E∩N)]2 (E∩N is a deprotonated 2-substituted pyridine; E = S (2), Se (3); Hppz = 1-phenylpyrazole) were cocrystallized with 1,4-diiodotetrafluorobenzene (FIB) to give cocrystals 1·(FIB) and (2−3)·2(FIB); the parent complexes and the cocrystals were studied by X-ray crystallography. The crystal structure of trans-(O,C)-1·FIB is assembled mainly by the I···O halogen bonding (XB) to give the [@PdII 2]O···I(areneF)I···O[@PdII 2] linkage, while trans-(E,N)-(2–3)·2(FIB) are built by the joint action of I···Pd and I···E XBs, thus furnishing the PdII 2···I(areneF)I···E[@PdII 2] (E = S, Se) cluster. Detailed theoretical (DFT) studies with the application of the QTAIM, ELF, NBO, IGM, SAPT, and HSAB methods revealed several types of attractive noncovalent interactions in the cocrystals, namely, the I···Pd, I···E (E = O, S, Se), I···C, π–π-stacking, and π···F interactions. I···Pd is a rare type of XB involving the metal center as an XB acceptor, the Pd···Pd communication facilitating the I···Pd bonding. The I···Pd and I···E bonds are comparable in strength (the bond interaction energies being between −7 and −13 kcal/mol), but the former is controlled by dispersion forces, while the latter is mostly governed by an electrostatic term.

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Section: Resultsmentioning

confidence: 99%

Halogen Bonding Involving Palladium(II) as an XB Acceptor

Катленок

Rozhkov

Levin

et al. 2020

Crystal Growth & Design

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“…For 1a, two supplementary cathodic irreversible waves at -1. 19 and -1.39 V were recorded and can be attributed to the dissociative reduction of the C-I bonds.…”

Section: Electrochemically Driven Interfacial Halogen Bonding Betweenmentioning

confidence: 95%

Electrochemically driven interfacial halogen bonding on self-assembled monolayers for anion detection

et al. 2019

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“…The groups of Beer as well as Schöllhorn and Fave also investigated a range of other redox transducers in XB anion sensors, such as viologen-based systems for detection of various halides, whereby all studies revealed an important contribution of XB in obtaining (enhanced) voltammetric responses. [147][148][149] The latter groups further conducted a range of systematic studies into XB iodo-tetrathiafulvalene (TTF) voltammetric sensors. 138,150 As shown in Fig.…”

Section: Redox-active Sensorsmentioning

confidence: 99%