34507-61-4Relevant articles and documents
Structure, optical and electro-physical properties of tetramerized anion-radical salt (N-Xy-Qn)(TCNQ)2
?wietlik, Roman,Barszcz, Boles?aw,Iaroshenko, Viktor O.,Mizera, Adam,Rytel, Karol,Starodub, Tetiana N.,Starodub, Vladimir A.
, (2022/01/14)
The (N-Xy-Qn)(TCNQ)2 anion-radical salt characterized by tetramerized stacks of the TCNQ acceptor molecules has been synthesized and characterized using vibrational spectroscopy and electrical resistivity measurements. The bond lengths analysis based on the crystal structure data, indicates that the TCNQ molecules are non-uniformly charged with ?0.83 e localized on the inner B molecules and ?0.33 e on the outer A molecules within ABBA tetramers. Both infrared and Raman spectra of (N-Xy-Qn)(TCNQ)2 are dominated by vibrational modes of TCNQ and display splitting related to the tetramerized structure. Many of these features are affected by the strong electron-molecular vibration (EMV) coupling. Other charge-sensitive modes allowed estimation of charge localized on TCNQ, with the results that confirm the charges estimated on basis of the crystal data. Electrical measurements revealed the low-conducting behavior with room temperature conductivity value of 2.6 mS cm?1 and temperature dependence of resistivity that can be explained within the band conduction model. The calculated activation energies range from 0.169 eV to 0.187 eV, depending on the crystallographic direction and thermal history of the sample.
Conductive casting films based on an octasilicate-core dendrimer containing the mixed-valence state TCNQ on the periphery
Irie, Yasuyuki,Li, Lina,Imoto, Hiroaki,Komada, Megumi,Nishino, Takashi,Naka, Kensuke
, p. 114513 - 114518 (2016/12/24)
An octasilicate (OS)-core dendrimer terminated with imidazolium-7,7,8,8-tetracyanoquiodimethane (TCNQ) anion radicals (OS-mimTCNQ) was synthesized from an OS-core dendrimer having alkyl bromides as terminal groups (OS-mimBr) via anion exchange reaction wi
Preparation and characterization of polyborazines
Bai,Niedenzu,Serwatowska,Serwatowski
, p. 228 - 233 (2008/10/08)
The reaction of the borazine (C2H5)3B3N3H 2[Si(CH3)3] with B-monohaloborazines gives reasonable yields of diborazinyls (C2H5)3B3N3H 2[R2B3N3R3′] (1); in addition, small amounts of polyborazinyls (2, 3) are formed and species containing up to four borazine rings in an individual molecule could be identified. The triborazinyl [(C2H5)3B3N3H 2]2[C2H5]B3N 3H3 (4) was prepared in analogous fashion. Poly(borazin-2-yl)amines containing borazine rings linked by nitrogen (5, 6) have been obtained by the interaction of B-monohaloborazines with either HN[Si(CH3)3]2, N[Si(CH3)3]3, or N-lithioaminoborazines, but the reaction of NH3 with B-haloborazines containing annular NH groups preferentially leads to inseparable oligomer mixtures. The reaction of (methylthio)borane species such as B(SCH3)3, (CH3SBNCH3)3, or (CH3S)(C2H5)2B3N 3H3 with aminoborazine derivatives generally also gives product mixtures in a series of sequential processes, although the 2,4-bis(borazin-2-ylamino)borazine (C-H3)3N3B3[C2H 5][HN(C2H5)2B3N 3(CH3)3]2 (8) was obtained from the reaction of (CH3S)2(C2H5)B3N 3(CH3)3 with 2 molar equiv of (H2N)(C2H5)2B3N 3(CH3)3. The 2,4,6-tris(borazin-2-ylamino)borazine [(CH3)3N3B3(CH3) 2NH]3B3N3(CH3) 3 (10b) was prepared by the reaction of (ClBNCH3)3 with 3 molar equiv of (LiHN)(CH3)2B3N3(CH 3)3.
