Jia, Chunyang; Ding, J.; Liu, Shi-Xia; Labat, G.; Neels, A.; Hauser, A.; Decurtins, Silvio (2013). A Pt(II) complex with both a phenanthroline and a tetrathiafulvalene-extended dithiolate ligand: Synthesis, crystal structure, electrochemical and spectroscopic properties. Polyhedron, 55, pp. 87-91. Elsevier 10.1016/j.poly.2013.02.064
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The reaction of 4,5-bis(2'-cyanoethylsulfanyl)-4',5'-dipropylthiotetrathiafulvalene with Pt(phen)Cl-2 (phen = 1,10-phenanthroline) with CsOH as base in CH3OH-THE affords the target complex I in 44% yield. This complex crystallizes in the monoclinic space group P2(1)/c, M = 790.01, a = 12.1732(12), b = 15.851(2), c = 14.5371(16) angstrom, beta = 107.693(12)degrees, V = 2672.4(5) angstrom(3) and Z = 4. It undergoes two reversible single-electron oxidation and two irreversible reduction processes. An intense electronic absorption band at 15200 cm(-1) (658 nm) in CH2Cl2 is assigned to the intramolecular mixed metal/ligand-to-ligand charge transfer (LLCT) from a tetrathiafulvalene-extended dithiolate-based HOMO to a phenanthroline-based LUMO. This band shifts hypsochromically with increasing solvent polarity. Systematic changes in the optical spectra upon oxidation allow precise tuning of the oxidation states of 1 and reversible control over its optical properties. Irradiation of 1 at 15625 cm(-1) (640 nm) in glassy solution below 150K results in emission from the (LLCT)-L-3 excited state. GRAPHICS (C) 2013 Elsevier Ltd. All rights reserved.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Jia, Chunyang, Liu, Shi-Xia, Decurtins, Silvio |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
0277-5387 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Gabriela Claudia Frei |
Date Deposited: |
25 Jul 2014 16:24 |
Last Modified: |
05 Dec 2022 14:31 |
Publisher DOI: |
10.1016/j.poly.2013.02.064 |
Uncontrolled Keywords: |
Tetrathiafulvalene, Intramolecular charge-transfer, Spectroelectrochemistry |
BORIS DOI: |
10.7892/boris.46365 |
URI: |
https://boris.unibe.ch/id/eprint/46365 |
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