Elementorganische Verbindungen mit o-Phenylenresten, XXXI [1]. Charge-transfer-Komplexe von 2,3,7,8-Tetrakis(methylthio)chalkogenanthrenen mit 7,7,8,8-Tetracyanchinodimethan und Tetracyanethen / Organometalloidal Compounds with o-Phenylene Substituents, Part XXXI [1]. Charge-transfer Complexes of 2,3,7,8-Tetrakis(methylthio)chalkogenanthrenes with 7,7,8,8-Tetracyanoquinodimethane and Tetracyanoethene

The title compounds are prepared by slow evaporation of dilute solutions of the components. 2,3,7,8-Tetrakis(methylthio)thianthrene and -selenanthrene give isostructural 2:1 complexes with 7,7,8,8-tetracyanoquinodimethane (TCNQ) built up by donor/acceptor/donor units in which the TCNQ molecule is inserted into the cavity formed by two of the folded, oppositely arranged chalcogenanthrene molecules. These units are connected to chains by S -S contacts via the methylthio groups. From 2,3,7,8-tetrakis(methylthio)thianthrene and tetracyanoethene again a 2:1 complex is obtained, however, with a columnar structure in which two donor stacks are slightly interlinked by an acceptor stack thus forming a structure with alternating donor and acceptor molecules. The molecules are arranged in such a way that an optimum overlap of the HOMOs of the donors and the LUMOs of the acceptors, all of which are of π-type character according to MNDO calculations, is secured.

Download Full-text

Elementorganische Verbindungen mit o-Phenylenresten, XXVIII [1] Charge-transfer-Komplexe von 2,3,7,8-Tetraalkoxy-chalkogenanthrenen mit 7,7,8,8-Tetracyan-2,3,5,6-tetrafluor-chinodimethan / Organometalloidal Compounds with o-Phenylene Substituents, Part XXVIII [1] Charge-Transfer Complexes of 2,3,7,8-Tetraalkoxy-chalcogenanthrenes wjth 7,7,8,8-Tetracyano-2,3,5,6-tetrafluoro-quinodimethane

Zeitschrift für Naturforschung B ◽

10.1515/znb-1996-0913 ◽

1996 ◽

Vol 51 (9) ◽

pp. 1295-1300 ◽

Cited By ~ 2

Author(s):

Stephan Friederichs ◽

Jens Kudnig ◽

Günter Klar

Keyword(s):

Charge Transfer ◽

Crystal Structures ◽

Pure State ◽

Charge Transfer Complexes ◽

Columnar Crystal ◽

Donor And Acceptor ◽

Mndo Calculations ◽

Type Character ◽

A Charge ◽

Acceptor Molecules

2,3,7,8-Tetramethoxythianthrene and -selenanthrene, as well as -tetraethoxythianthrene give isostructural 1:1 charge-transfer complexes with 7,7,8,8-tetracyano-2,3,5,6-tetrafluoroquinodimethane. In the columnar crystal structures there are alternating donor and acceptor molecules. The chalcogenanthrene molecules which are folded at their E···E axes in the pure state, are planar in the complexes indicating a charge-transfer according to [donor]+ [acceptor]- . Consecutive molecules of the stacks are arranged in such a way that an optimum overlap of the HOMO of the donor and the LUMO of the acceptor, both of which are of π-type character according to MNDO calculations, is secured.

Download Full-text

Crystal growth and characterization of solvated organic charge-transfer complexes built on TTF and 9-dicyanomethylenefluorene derivatives

CrystEngComm ◽

10.1039/c5ce01059d ◽

2015 ◽

Vol 17 (32) ◽

pp. 6227-6235 ◽

Cited By ~ 2

Author(s):

Amparo Salmerón-Valverde ◽

Sylvain Bernès

Keyword(s):

Charge Transfer ◽

Crystal Growth ◽

Charge Transfer Complexes ◽

Organic Complexes ◽

Donor Acceptor ◽

Degree Of Charge Transfer

A series of solvated donor–acceptor organic complexes were shown to slowly release the lattice solvent while the degree of charge transfer decreases steadily. This behavior is not observed in the case of a hydrate.

Download Full-text

Nanopore-induced host–guest charge transfer phenomena in a metal–organic framework

Chemical Science ◽

10.1039/c7sc05390h ◽

2018 ◽

Vol 9 (13) ◽

pp. 3282-3289 ◽

Cited By ~ 12

Author(s):

S. Yamamoto ◽

J. Pirillo ◽

Y. Hijikata ◽

Z. Zhang ◽

K. Awaga

Keyword(s):

Charge Transfer ◽

Self Assembly ◽

Metal Organic Framework ◽

Donor And Acceptor ◽

Organic Electron ◽

Donor Acceptor ◽

Metal Organic ◽

Bulk Scale ◽

A Charge ◽

Organic Framework

Using the “crystal sponge” approach, weak organic electron donor molecules were impregnated and evenly distributed in a crystal of a metal–organic framework (MOF), with the self-assembly of the donor–acceptor pairs with electron acceptor ligands. The nanopores of the MOF confined them and induced a charge transfer phenomenon, which would not occur between donor and acceptor molecules in a bulk scale.

Download Full-text

PAH/PAH(CF 3 ) n Donor/Acceptor Charge‐Transfer Complexes in Solution and in Solid‐State Co‐Crystals

Chemistry - A European Journal ◽

10.1002/chem.201902712 ◽

2019 ◽

Vol 25 (59) ◽

pp. 13547-13565 ◽

Cited By ~ 1

Author(s):

Karlee P. Castro ◽

Eric V. Bukovsky ◽

Igor V. Kuvychko ◽

Nicholas J. DeWeerd ◽

Yu‐Sheng Chen ◽

...

Keyword(s):

Charge Transfer ◽

Solid State ◽

Charge Transfer Complexes ◽

Donor Acceptor

Download Full-text

Charge Transfer Complexes of Aromatic Nitrocompounds with Disubstituted Naphthalenes. I.Spectroscopic Investigation of the Donor Behaviour of the 2,6- and 23-Dimethylnaphthalene

Zeitschrift für Naturforschung A ◽

10.1515/zna-1984-1221 ◽

1984 ◽

Vol 39 (12) ◽

pp. 1274-1278 ◽

Cited By ~ 3

Author(s):

M. H. Abdel-Kader ◽

R. M. Issa ◽

M. M. Ayad ◽

M. S. Abdel-Mottaleb

Keyword(s):

Charge Transfer ◽

Spectral Characteristics ◽

Charge Transfer Complexes ◽

Element Analysis ◽

H Nmr ◽

Aromatic Nitrocompounds ◽

Donor Acceptor ◽

The Difference ◽

Donor Behaviour ◽

Ct Complexes

The charge transfer complexes of 2,3- (I) and 2,6-Dimethylnaphthalenes (II) as electron donors with tri- and di-nitrobenzenes as electron acceptors are prepared and investigated by element analysis, IR. 1H nmr and electronic absorption spectroscopy. The results showed that I yields CT complexes of 1:1 type only while II is capable of forming 1 : 1 and 1 : 2 (donor: acceptor) compounds. The spectral characteristics of the CT complexes are pointed out and discussed. The difference in the donor behaviour between I and II is explained in the light of PPP-MO calculations.

Download Full-text