Special Issue "Chalcogen-Nitrogen Chemistry"
A special issue of Molecules (ISSN 1420-3049).
Deadline for manuscript submissions: closed (31 July 2013)
Prof. Dr. J. Derek Woollins
Department of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK
Interests: synthesis; p block chemistry; phosphorus; sulphur; selenium; tellurium; structural science
Sulfur-nitrogen heterocycles (and Se-N/Te-N systems) have been known for many years but continue to excite attention as a consequence of the exciting new systems which are being prepared sometimes by rather unpredictable routes. Apart from fundamental synthetic and mechanistic chemistry new S-N, organo S-N (and their heavier selenium and tellurium congeners) have great potential in new electronic and magnetic materials. The area encompasses synthesis, heterocycles, ionic materials, conductors, superconductors, new magnetic materials and utilises a wide range of computational and spectroscopic methods.
Prof. Dr. Derek Woollins
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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed Open Access monthly journal published by MDPI.
Review: Breathing Some New Life into an Old Topic: Chalcogen-Nitrogen π-Heterocycles as Electron Acceptors
Molecules 2013, 18(8), 9850-9900; doi:10.3390/molecules18089850
Received: 3 July 2013; in revised form: 13 August 2013 / Accepted: 14 August 2013 / Published: 16 August 2013| Download PDF Full-text (2445 KB)
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Type of Paper: Article
Title: Breathing Some New Life into an Old Topic: Chalcogen-Nitrogen Pi-heterocycles as Electron Acceptors
Authors: Anton V. Lonchakov 1,2, Nina P. Gritsan 1,2 and Andrey V. Zibarev 2,3
Affiliations: 1Institute of Chemical Kinetics and Combustion, Russian Academy of Sciences, 630090 Novosibirsk, Russia
2Department of Physics, National Research University - Novosibirsk State University, 630090 Novosibirsk, Russia
3Institute of Organic Chemistry, Russian Academy of Sciences, 630090 Novosibirsk, Russia
Abstract: Paper discusses design, synthesis and characterization of chalcogen-nitrogen pi-heterocycles possessing positive electron affinity together with their use for preparation of charge-transfer complexes and radical-anion salts - candidate building blocks of electrical and magnetic functional molecular materials.
Type of Paper: Article
Title: Synthesis, Structures and Electrochemistry of 1-triarylphosphinimino-1,3,5,2,4,6,8-trithiatetrazocines. Detection and decay of Trithiatetrazocinyl Radical Anions by SEEPR Spectroscopy
Authors: Xin Yu, Tracey L. Roemmele and René T. Boeré
Affiliations: Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4
Abstract: Reaction of the bicyclic sulfur-nitrogen heterocycles RC6H4CN5S3 (R = 4-CH3O, 4-CH3, 4-H, 4-Cl, 4-CF3, 3-CF3, with PR’3 (R’ =C6H5 or 4-CH3OC6H4) produces the corresponding 3-imino-7-aryl-1,3,5-trithia-2,4,6,8-trithiatetrazocines RC6H4CN4S3NPR’3. In all cases the endo-isomers were isolated and characterized by 1H, 31P, and 19F NMR, UV spectroscopy, and X-ray crystallography. Cyclic voltammetry (CV) studies of RC6H4CN4S3NPR’3 using a glassy carbon working electrode in CH2Cl2 with 0.4 M [nBu4N][PF6] all displayed two irreversible reduction processes at room temperature at approximately –1.9 V and –2.2 V, respectively, and one irreversible oxidation process at approximately 1.0 V (versus ferrocene/ferrocenium). The generated [RC6H4CN4S3NPR’3]–• radical anions (R’ = 4-CH3OC6H4, R = 4-CH3O, 4-H, 4-CF3,) were detected using the Simultaneous Electrochemical Electron Paramagnetic Resonance (SEEPR) method to give: (a) [4-CH3OC6H4CN4S3NP3]–•, estimated a(31P) = 0.660 mT, a(14N1) = 0.045 mT, a(14N2,3) = 0.256 mT, a(14N4,5) = 0.324 mT; (b) [C6H5CN4S3NP3]–•, estimated a(31P) = 0.613 mT, a(14N1) = 0.052 mT, a(14N2,3) = 0.255 mT, a(14N4,5) = 0.346 mT;(c) [3-CF3C6H4CN4S3NP3]–•, estimated a(31P) = 0.570 mT, a(14N1) = 0.031 mT, a(14N2,3) = 0.294 mT, a(14N4,5) = 0.325 mT. Bulk reductive electrolysis of a solution of [3-CF3C6H5CN4S3NP3] in CH2Cl2 produces a single radical with a(N) = 0.51 mT and g = 2.0105, consistent with production of the known radical [3-CF3-C6H4CN2S2]•.
Last update: 25 February 2013