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Search for "large dipole moment" in Full Text gives 7 result(s) in Beilstein Journal of Organic Chemistry.
Fluorine effect in nucleophilic fluorination at C4 of 1,6-anhydro-2,3-dideoxy-2,3-difluoro-β-D-hexopyranose
Beilstein J. Org. Chem. 2020, 16, 2880–2887, doi:10.3762/bjoc.16.237
- destabilize the adjacent carbocation center [41][42][43], avoiding 1,2-alkyl shift, and thus formation of byproduct 20. Similarly, the large dipole moment of the C–F bond at C2 influences the outcome of the deoxyfluorination at C4 [3]. For triflates 16 and 17, both dipoles (green arrows, Figure 3a) are
Synthesis, liquid crystalline behaviour and structure–property relationships of 1,3-bis(5-substituted-1,3,4-oxadiazol-2-yl)benzenes
Beilstein J. Org. Chem. 2020, 16, 149–158, doi:10.3762/bjoc.16.17
- -plane zigzag conformation [36]. Fluorine is the most electronegative element of the periodic table. This high electronegativity confers to C–F bond a large dipole moment of 1.39 D while that of C–H bond is only 0.40 D [37]. Owing to the all-trans conformation, the local dipole moments Cδ−–Hδ+ of
Synthesis of dipolar molecular rotors as linkers for metal-organic frameworks
Beilstein J. Org. Chem. 2019, 15, 1331–1338, doi:10.3762/bjoc.15.132
- linkers in MOFs with potential applications as ferroelectric materials and for optical signal processing. Keywords: benzothiadiazole; dipolar rotor; fluorescence; large dipole moment; metal organic framework linker; Introduction Rotors are among the fundamental functional units in engineering in our
Selectively fluorinated cyclohexane building blocks: Derivatives of carbonylated all-cis-3-phenyl-1,2,4,5-tetrafluorocyclohexane
Beilstein J. Org. Chem. 2015, 11, 2671–2676, doi:10.3762/bjoc.11.287
- therefore there are three C–F bonds orientated triaxial, on one face of the ring. This gives rise to a large dipole moment (6.2 D) and a molecule which is among the most polar aliphatics known in organic chemistry. The all-cis-tetrafluorocyclohexanes 2 and 3 are also facially polarised because in the chair
Quarternization of 3-azido-1-propyne oligomers obtained by copper(I)-catalyzed azide–alkyne cycloaddition polymerization
Beilstein J. Org. Chem. 2015, 11, 1037–1042, doi:10.3762/bjoc.11.116
- dipole moment and aromaticity, 1,2,3-triazole itself may be a functional group. Polymers composed of dense 1,2,3-triazole moieties on the backbone are thus promising as functional materials. Recently, we have investigated the CuAAC polymerization of 3-azido-1-propyne (AP) using 3-bromo-1-propyne as a
- chemistry [8][9][10][11][12] to materials science [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29], as well as polymer synthesis [30][31][32][33][34][35][36]. Most of these studies deal with the 1,2,3-triazole moiety just as a linker. However, since 1,2,3-triazole possesses a large
A new family of four-ring bent-core nematic liquid crystals with highly polar transverse and end groups
Beilstein J. Org. Chem. 2013, 9, 26–35, doi:10.3762/bjoc.9.4
- arm ends with a highly polar cyano group. The end cyano group in one of the arms of 1a–1c contributes to the large dipole moment. In highly polar calamitic cyanobiphenyl compounds [42][43] as well as in bent-core compounds possessing an end cyano moiety [44][45][46][47][48] the antiparallel short
Donor-acceptor substituted phenylethynyltriphenylenes – excited state intramolecular charge transfer, solvatochromic absorption and fluorescence emission
Beilstein J. Org. Chem. 2010, 6, 992–1001, doi:10.3762/bjoc.6.112
- importance. In this class of molecule, the excited state is generally highly polar compared to the ground state due to intramolecular charge transfer from the donor to the acceptor group. The intramolecular charge transfer results in a large dipole moment in the excited state compared to that of the ground
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