Strong intramolecular donor-acceptor Si←-S(=C) interaction
نویسندگان
چکیده
منابع مشابه
Intramolecular charge transfer processes in donor-acceptor substituted vinyltetrahydropyrenes.
Two novel donor-acceptor-substituted vinyltetrahydropyrene derivatives, 2-N,N-dimethylamino-7-(1-carbethoxyvinyl)-4,5,9,10-tetrahydropyrene, , and 2-N,N-dimethylamino-7-(1,1-dicyanovinyl)-4,5,9,10-tetrahydropyrene, , were synthesized and their photophysical properties investigated in solvents of different polarities. Our studies revealed the existence of intramolecular charge transfer excited s...
متن کاملDonor-acceptor interaction and the peculiar structures of dications.
vibrational spectrum has recently been questioned.22 The vibrational frequencies of 3BI and 'B, dimethylsilylene are listed in Table V. One interesting feature of these is the intensity pattern for the two modes occurring near 1400 cm-' which, by analogy with 'Al, should be observed experimentally near 1200 cm-'. In 'Al these were both observable with moderate to strong intensity; for 3Bl they ...
متن کاملDonor-acceptor phthalocyanine nanoaggregates.
A novel donor-acceptor bisphthalocyanine (bis-Pc, 1) in which two different Pc units (Zn(II)-Pc and Ni(II)-Pc) are linked via vinylene spacers to the pseudopara positions of a central [2.2]paracyclophane moiety is described. The synthesis of 1 is achieved by two successive Heck reactions of pseudopara-divinyl[2.2]paracyclophane 9 with, sequentially, a zinc(II)- and a nickel(II)-iodophthalocyani...
متن کاملElectronic polarization reversal and excited state intramolecular charge transfer in donor/acceptor ethynylpyrenes.
An attempt to tune the electronic properties of pyrene (Py) by coupling it with a strong electron donor (-PhNMe2, DMA)/acceptor (anthronitrile, AN) through an ethynyl bridge has been undertaken. A moderate electron donor (iPrOPh-, IPP)/acceptor (2-quinolinyl, 2Q) has also been incorporated, and all four molecules were studied with reference to a neutral molecule, namely, 1-phenylethynylpyrene (...
متن کاملIntramolecular triplet energy transfer in donor-acceptor molecules linked by a crown ether bridge.
Bichromophoric compounds BP-C-NP and BP-C-NBD were synthesized with benzophenone chromophore (BP) as the donor, and 2-naphthyl (NP) and norbornadiene group (NBD) as the acceptor, respectively. Their intramolecular triplet energy transfer was examined. The bridges linking the donor and acceptors in these molecules involve a crown ether moiety complexing a sodium ion. Phosphorescence quenching, f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1993
ISSN: 0108-7673
DOI: 10.1107/s010876737809368x