Zirkulardichroismus und Rotationsdispersion im Bereich einer intermolekularen Charge Transfer-Absorptionsbande<sup>1,3</sup>

Briegleb, G.; Kuball, Hans‐Georg; Henschel, K.‐P.

doi:10.1524/zpch.1965.46.3_4.229

Cited by 16 publications

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“…This is consistent with the results of Reuben's work with /3-picoline where he found that association of the type Pr(DPM)3(amine)2 was dominant over a large range of reagent to substrate ratios. 7 The Pr(DPM)3-(amine)2 adducts listed in Table I show an induced CE that can be correlated with the Cahn, Ingold, and " CD measurements were made at room temperature using a Durrum-Jasco Model J-20 recording spectropolarimeter. The solution of the compound studied and Pr(DPM)3 were prepared in CC14 which had been distilled from P20,, and stored over molecular sieve.…”

Section: Sirmentioning

confidence: 91%

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Mitchell¹,

Carroll²

1973

J. Am. Chem. Soc.

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Section: Sirmentioning

confidence: 91%

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Mitchell¹,

Carroll²

1973

J. Am. Chem. Soc.

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“…The inductive properties of (-) (12), we propose that the formation of charge-transfer complexes between C and S in this solvent be considered (13,14).…”

Section: -T 1 9 a T -65mentioning

confidence: 99%

Optical Activity of Symmetric Compounds in Chiral Media. I. Induced Circular Dichroism of Unbound Substrates

Hayward¹,

Totty²

1971

Can. J. Chem.

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In the presence of chiral environment compounds, C, optical rotation is induced in symmetric substrates, S, and may be detected as circular dichroism in the electronic spectra of the solutions. Thus the n-?I* transitions of symmetric and racemic carbonyl compounds, and of symmetric nitro and azo compounds, become optically active when these S are dissolved in chiral hydrocarbons, ketones, or carbinols, or in solutions of these C in achiral solvents. The rotational strengths of the induced circular dichroism bands of S are solvent, temperature, and concentration dependent. Only limited correlation of the sign and magnitude of the induced bands with the stereochemistry of C and S is evident on the data so far accumulated. Halogenated achiral solvents enhance the intensity, and, in some cases reverse the sign of the induced bands.A new mechanism of asymmetric induction is proposed in which specific bonding of C with S is not prerequisite.

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Nachweis diastereomerer Elektronen-Donor-Acceptor-Assoziate durch1H-NMR-Spektroskopie

et al. 1978

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l Bei den bisher rontgenographisch untersuchten Diorganozinn-chalkogeniden wurden entweder sechsgliedrige gewellte['] oder viergliedrige ebene['] Ringe gefunden. Daneben konnten wir bei einigen Verbindungen auch schlechter kristallisierende Modifikationen isolieren, deren Eigenschaften wie Schwerloslichkeit, hoher und unscharfer Schmelzpunkt sowie Besonderheiten des Sch~ingungsspektrums'~] auf eine polymere Struktur hinwiesen. Farblose Einkristalle von polymerem Diisopropylzinn-sulfid bilden sich aber, wenn man das nach iPrzSnClz + NazS + 2NaCl+ iPr'SnS zunachst in niedermolekularer Form erhalteneI41 Produkt unter Dimethylformamid stehen 1aDt. Die neue Modifikation kristallisiert orthorhombisch (Raumgruppe Pna21-Cg,; a = 16.31 9, b = 9.455, c = 5.988 8) mit vier Formeleinheiten (C3H7)'SnS in der Elementarzelle. Die Rontgen-Strukturanaly~e[~] (R = 0.042) ergab, daB Zinnund Schwefelatome alternierend in Richtung der c-Achse zu ebenen Ketten verkniipft sindr6]:

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Zirkulardichroismus und Rotationsdispersion im Bereich einer intermolekularen Charge Transfer-Absorptionsbande^1,3

Cited by 16 publications

References 0 publications

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Optical Activity of Symmetric Compounds in Chiral Media. I. Induced Circular Dichroism of Unbound Substrates

Nachweis diastereomerer Elektronen-Donor-Acceptor-Assoziate durch1H-NMR-Spektroskopie

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Zirkulardichroismus und Rotationsdispersion im Bereich einer intermolekularen Charge Transfer-Absorptionsbande1,3

Cited by 16 publications

References 0 publications

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Use of tris(dipivalomethanato)praseodymium(III) for the determination of the chirality of simple amines and cyclic 1,2-amino alcohols

Optical Activity of Symmetric Compounds in Chiral Media. I. Induced Circular Dichroism of Unbound Substrates

Nachweis diastereomerer Elektronen-Donor-Acceptor-Assoziate durch1H-NMR-Spektroskopie

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Zirkulardichroismus und Rotationsdispersion im Bereich einer intermolekularen Charge Transfer-Absorptionsbande^1,3