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dc.contributor.author | Luconi L. | |
dc.contributor.author | Garino C. | |
dc.contributor.author | Cerreia Vioglio P. | |
dc.contributor.author | Gobetto R. | |
dc.contributor.author | Chierotti M. | |
dc.contributor.author | Yakhvarov D. | |
dc.contributor.author | Gafurov Z. | |
dc.contributor.author | Morozov V. | |
dc.contributor.author | Sakhapov I. | |
dc.contributor.author | Rossin A. | |
dc.contributor.author | Giambastiani G. | |
dc.date.accessioned | 2020-01-15T22:07:02Z | |
dc.date.available | 2020-01-15T22:07:02Z | |
dc.date.issued | 2019 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/156656 | |
dc.description.abstract | © 2019 American Chemical Society. Four metal halides of the (tBuPCN)NiX family [X = F (1), Cl (2), Br (3), or I (4); PCN = 1-[3-[(di-tert-butylphosphino)methyl]phenyl]-1H-pyrazole] have been prepared through a direct reaction of the corresponding anhydrous NiX2 salts and the unsymmetrical PCN pincer ligand. Structural information from single-crystal X-ray data, 19F solution nuclear magnetic resonance, and combined electrochemical results [cyclic voltammetry (CV) and in situ electron paramagnetic resonance spectro-electrochemistry] reveal that the fluoride complex 1 is different from the other halides 2-4 in terms of electro-oxidation behavior (presence of three anodic peaks instead of one in the CV profile). 1 is also different from its symmetrical analogue (tBuPCP)NiF in terms of halogen-bonding capability toward the halogen-bond donor, iodopentafluorobenzene (C6F5I, IPFB). The positive Î"S° value for the formation of the 1···IPFB adduct inferred from the van't Hoff plots is in agreement with the existence of (1·H2O) aggregates in solution, not present in 2-4. The high nucleophilicity of the fluoride ligand and the simultaneous presence of electrophilic (acidic) protons on the sidearm of the pyrazole ligand are at the origin of the observed phenomena. | |
dc.title | Halogen-Bonding Interactions and Electrochemical Properties of Unsymmetrical Pyrazole Pincer Ni<sup>II</sup> Halides: A Peculiar Behavior of the Fluoride Complex (PCN)NiF | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 1 | |
dc.relation.ispartofseries-volume | 4 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 1118 | |
dc.source.id | SCOPUS-2019-4-1-SID85060053848 |