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 |
|