Identification of a (H2O)8 cluster in a supramolecular host of a charge transfer platinum(II) complex View Full Text


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Article Info

DATE

2014-09

AUTHORS

SUTANUVA MANDAL, IPSITA CHATTERJEE, ALFONSO CASTIÑEIRS, SREEBRATA GOSWAMI

ABSTRACT

The chemical reaction of PtII(L1)Cl2 [L1= 2-(phenylazo)pyridine] with a bidentate N,S-donor atom ligand, 2-phenylthioaniline, (HL2) in alkaline acetonitrile yielded a mixed ligand donor acceptor complex, [PtII(L1)(L2)−]Cl, [1]Cl. The complex has been characterized by using a host of physical methods: X-ray crystallography, nuclear magnetic resonance, cyclic voltammetry, absorption spectroscopy, electron paramagnetic resonance. The complex showed intense interligand charge transfer (ILCT) transition in the long wavelength region of UV-vis spectrum at 785 nm. The single-crystal X-ray structure of complex, [1]Cl⋅2.6H2O is reported. The cationic complex upon crystallization from aqueous methanol solvent produces an assembly of three dimensional (H2O)8 guest moiety within the host lattice of reference Pt-complex. The water assembly showed a unique type of aggregation of two trigonal pyramids hydrogen bonded with three chloride anions. The complex displayed two reversible responses at −0.34 and −1.05 V along with one irreversible anodic response at 0.91 V versus Ag/AgCl reference electrode. The redox processes are characterized by examination of EPR spectra of the electrogenerated complexes.Graphical AbstractAn unusual and three dimensional (H2O)8 cluster having aggregation of two trigonal pyramids is reported in the inorganic host lattice of cationic PtII-complex. The complex shows characteristic intramolecular interligand charge transfer transition in the long wavelength region of the visible spectrum at 785 nm. More... »

PAGES

1507-1513

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12039-014-0656-2

DOI

http://dx.doi.org/10.1007/s12039-014-0656-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1015180015


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