CAS No.3172-56-3,3,3'-Bithiophene Suppliers

Detail of "3172-56-3"

CAS Number:

3172-56-3

Name:

3,3'-Bithiophene

Molecular Structure:

Formula:

C₈H₆S₂

Molecular Weight:

166.26

Synonyms:

3,3'-Bithienyl;3,3'-Dithienyl;3-Thiophen-3-ylthiophene;

Density:

1.243 g/cm³

Melting Point:

132-135 °C

Boiling Point:

197.6 °C at 760 mmHg

Flash Point:

50.9 °C

Appearance:

solid

Reference

Conformational behavior of isomeric bithienyls: Conformational behavior of isomeric bithienyls. An ab initio study. Barone, Vincenzo; Lelj, Francesco; Russo, Nino; Toscano, Marirosa (Dip. Chim., Univ. Napoli, Naples I-80134, Italy). J. Chem. Soc., Perkin Trans. 2, (6), 907-10 (English) 1986. CODEN: JCPKBH. ISSN: 0300-9580. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The conformational behavior of isomeric bithienyls was analyzed by ab initio STO-3G calcns. 3172-56-3 and 492-97-7 are also in the experiment. optimizing the most significant geometrical parameters. The torsional potentials of bithienyls are very similar to those of the corresponding bifuranyls, and are characterized by min. at planar conformations and max. at perpendicular ones. The energy difference between cis and trans conformers is very low except for the 2,2'-isomer. Inclusion of the d orbitals on S atoms does not alter the general trends, but significantly increases the energy barrier of the 2,2'-isomer. .

Nematic phase nuclear magnetic resonance investigations of rotational isomerism: Nematic phase nuclear magnetic resonance investigations of rotational isomerism. Part IV. Conformational study on the rotamers of 3,3'-bithienyl. Lunazzi, Lodovico; Salvetti, Franco; Veracini, C. Alberto (Ist. Chim. Org., Univ. Bologna, Bologna, Italy). J. Chem. Soc., Perkin Trans. 2, (15), 1796-9 (English) 1976. CODEN: JCPKBH. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The 220 MHz NMR spectrum of 3,3'-bithienyl in a nematic solvent showed that the mol. does not exist as a single freely rotating species but as an equil. between two nonplanar rotational conformers. The twisting angle in the rotamers is .apprx.22. 3172-56-3 which is the cas registry number of one of substances is just one of reagents here.degree. with the SS-trans-like rotamer being more abundant (.apprx.66%). These results agree with those from previous electron diffraction studies in the gas phase. .

Detail of "3172-56-3"

3,3'-Bithiophene

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CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

CAS No.3172-56-3 3,3'-Bithiophene

Reference