Ethylene binding in mono- and binuclear Cu^I complexes with tetradentate pyridinophane ligands

Abstract

Herein we report a series of CuI complexes supported by a tetradentate RN4 pyridinophane ligands that coordinate to ethylene forming either mononuclear complexes with ethylene coordinated in an η2-mode or...

Carbon Dioxide Electroreduction and Formic Acid Oxidation by Formal Nickel(I) Complexes of Di‐isopropylphenyl Bis‐iminoacenaphthene

“…These values are consistent with the typical range of coordination bonds. Interestingly, the Ni−C( sp 2 ) bond paths exhibit a curved trajectory (Figure 5b) characteristic for metal⋅⋅⋅π interactions [47,48] …”

“…Interestingly, the NiÀ C(sp 2 ) bond paths exhibit a curved trajectory (Figure 5b) characteristic for metal•••π interactions. [47,48] Analysis of the electron localization function (ELF) distribution [49,50] provides insights into subatomic structure. ELF values range from 0 to 1, with higher ELF values indicating regions of significant electron localization, suggesting the presence of covalent bonds, lone electron pairs, or inner-atomic shells.…”

Structural diversity of copper(i)–ethylene complexes with 2,4-bis(2-pyridyl)pyrimidine directed by anions

“…To our knowledge, the Cu( i ) complex bridged by the BF 4 − anion in the bridging bidentate mode is rare. In addition, a five-coordinate dinuclear Cu( i )–C 2 H 4 complex 47 bridged by μ–η 2 :η 2 -C 2 H 4 has been recently reported, along with dinuclear μ–η 2 :η 2 -C 2 H 4 complexes of Sc, 48,49 Cr, 50,51 Zr, 52–57 Hf, 53 and Yb–Pt. 58 Although only the 1D Rh coordination polymer in which paddle-wheel [Rh 2 (O 2 CCF 3 )] units are linked by μ–η 2 :η 2 -C 2 H 4 has been known, 59 complex 4 can be described as the unique 1D Cu( i ) coordination polymer bridged by μ–η 2 :η 2 -C 2 H 4 and the μ-BF 4 − anion.…”

Applicability of transferable multipole pseudo-atoms for restoring inner-crystal electronic force density fields. Chemical bonding and binding features in the crystal and dimer of 1,3-bis(2-hydroxyethyl)-6-methyluracil

“…One of the most commonly used ways to formally describe noncovalent interactions arranged according to the donoracceptor or, in other words, Lewis mechanism, is to identify an LP donor or a Lewis base and an LP acceptor or a Lewis acid. In our previous works (Shteingolts & Fayzullin, 2020;Shteingolts, Stash et al, 2021;Karimata et al, 2022;Takebayashi et al, 2023), we have repeatedly used this approach, although we have also raised some important caveats regarding its applicability (Saifina et al, 2023). Some caveats are also provided in this paper.…”