On the pivotal role of tetrel bonding in the supramolecular architectures of Pb^II–NCS complexes with chelating thiosemicarbazide derivatives

Abstract

Three new PbII complexes [Pb(LI)(SCN)]n, {[Pb(LII)](SCN)}n and {[Pb(HLIII)(SCN)](SCN)}n (HLI = N'-phenyl(pyridin-2-yl)methylene-N-phenylthiosemicarbazide, HLII = N'-amino(pyrazin-2-yl)methylenethiosemicarbazide, HLIII = N'-amino(pyridin-2-yl)methylenethiosemicarbazide) have been synthesized and characterized by spectroscopic techniques and single crystal X-ray crystallography....

Transition from covalent to noncovalent bonding between tetrel atoms

“…But there are caveats here as well. Unlike the majority of tetrel bonds in the literature, 34–52 the stability of these systems is predicated on an overall charge, whether positive or negative. Secondly, one sees a coulombic interaction more nuanced than the classical contact between a positive σ or π-hole on one unit and a negative region on the partner molecule.…”

Conformation-Associated C···dz2-PtII Tetrel Bonding: The Case of Cyclometallated Platinum(II) Complex with 4-Cyanopyridyl Urea Ligand

“…Particularly, metal-involved halogen bonds [31][32][33][34][35][36], chalcogen bonds [37], spodium bonds [20], pnictogen bonds [38], and πh/C•••M interactions [39][40][41][42][43] have been recognized. To contrast, in most examples of metal-involved TtB, a metal (commonly, tin or lead) is a σor π-hole donor, i.e., electrophilic site [44][45][46][47]. These interactions are the focus of many studies [48,49] due to importance of lead and tin coordination compounds for materials science [50][51][52][53].…”

A lead(ii)–N′-isonicotinoylpyrazine-2-carbohydrazonamide complex system as a converter of aerial carbon dioxide to carbonate under electrochemical conditions with the formation of a single-component white light-emitting phosphor

“…With all this in mind and in continuation of our comprehensive studies in the coordination chemistry of hemidirected Pb 2+ architectures as well as in shedding light on the role of noncovalent interactions in the formation of extended structures, 24–41 we have concentrated on N ′-isonicotinoylpyrazine-2-carbohydrazonamide (HL), 42 which was intentionally designed to serve as a potentially bridging ligand, in the reaction with lead as a complexing agent. To shed light into the nature of Pb⋯O tetrel bonds, DFT calculations have been used along with MEP surface and QTAIM analyses.…”