Organophosphines in organoplatinum complexes: structural aspects of PtPCX2 (X = OL, NL, Cl, SL, SeL, SiL, Br or I) derivatives

Melnı́k, Milan; Mikuš, Peter

doi:10.1007/s11243-017-0173-5

Cited by 2 publications

(1 citation statement)

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“…The coupling reaction of cis -Pt L 2 Cl 2 and 1,4-diethynylbenzene may also form macrocyclic compounds, because the Cl–Pt–Cl bond angle in cis -Pt L 2 Cl 2 is 90°, causing unfavorable polymerization. The other possible reason is the reactivity difference between the cis- and trans-complexes due to the “ trans effect ( trans influence )”. − …”

Section: Resultsmentioning

confidence: 99%

Synthesis of Platinum-Containing Conjugated Polymers Bearing Chiral Phosphine Ligands. Study of Geometries and Intermolecular Interactions Leading to Aggregation

et al. 2022

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Platinum (Pt)-containing conjugated polymers were synthesized by the dehydrochlorination coupling polymerization of cis- and trans-dichlorobis(N-(p-(diphenylphosphino)benzoyl)-l-valine methyl ester)platinum(II) {cis-PtL 2Cl2 and trans-PtL 2Cl2, L = P(Ph)2-p-C6H4CONHCH[CH(CH3)2]CO2CH3} with 1,4-diethynylbenzene, aiming at obtaining polymers with controlled geometry at the Pt centers. In the polymerization of cis-PtL 2Cl2, the geometry at the Pt centers was controlled by the amine used in the polymerization and the reaction temperature. The formed polymer with trans-Pt centers exhibited a circular dichroism signal at the main chain chromophore region in CH2Cl2/MeOH mixed solvent. Based on the crystal packing state and non-covalent interaction analysis of a model compound, the chiroptical activity is attributed to aggregation stabilized by intermolecular π–π, CH−π, and hydrogen-bonding interactions between the phosphine ligands.

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