The first coordination polymers with an [O] 2 [N]P(S)-Hg segment: a combined experimental, theoretical and database study

The study of one-dimensional coordination polymers {Hg Cl L } (1), {HgBr L } (2) and {Hg Cl L } (3) (L = (S)P(OC H ) NHC H NHP(S)(OC H ) and L = (S)P(OC H ) NC H NP(S)(OC H ) ) is the first such structural study of Hg(ii) coordination polymers with (O) (N)PS-based ligands. The mercury atoms adopt a...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2019-12, Vol.48 (48), p.17908-17918
Main Authors: Torabi Farkhani, Elham, Pourayoubi, Mehrdad, Izadyar, Mohammad, Andreev, Pavel V, Shchegravina, Ekaterina S
Format: Article
Language:English
Subjects:
Aliphatic compounds
Bonding strength
Coordination polymers
Covalent bonds
Crystallography
Ligands
Mercury (metal)
Mercury compounds
Polymers
Polystyrene resins
Stoichiometry
Surface analysis (chemical)
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Summary:The study of one-dimensional coordination polymers {Hg Cl L } (1), {HgBr L } (2) and {Hg Cl L } (3) (L = (S)P(OC H ) NHC H NHP(S)(OC H ) and L = (S)P(OC H ) NC H NP(S)(OC H ) ) is the first such structural study of Hg(ii) coordination polymers with (O) (N)PS-based ligands. The mercury atoms adopt a distorted trigonal pyramidal environment, Hg(Cl) (S) for 1 and 3 and Hg(Br) (S) for 2, and the difference observed in the stoichiometry of mercury halide to the thiophosphoramide ligand in 1 and 3 with respect to the one in 2 is a result of the formation of the Hg Cl ring, however, the molar ratio 2 : 1 of HgX (X = Cl and Br) to ligand was used for the preparation of all three complexes. The strengths of mercury-sulfur and mercury-halide covalent bonds are evaluated by theoretical calculations (QTAIM and NBO) which show their principally electrostatic nature with a partial covalent contribution. The energies of interactions building supramolecular assemblies and intramolecular interactions, i.e. NHCl, NHBr, CHCl, CHBr, CHO, CHS and CHπ, are theoretically evaluated. The characteristic structural features arising from the aromatic/aliphatic linkers in the ligands and chloride/bromide attached to mercury are investigated by Hirshfeld surface analysis and fingerprint plots.
ISSN:1477-9226
1477-9234
DOI:10.1039/c9dt03546j