Zur diamagnetischen Anisotropie im [2.2]Metacyclophan

Autor:	Elisabeth Langer, Harald Lehner, Claudia Glotzmann
Rok vydání:	1974
Předmět:	Bond length Chemistry Stereochemistry Spectrum (functional analysis) Order (ring theory) Molecule General Chemistry Atomic physics Ring (chemistry) Ring current Topology (chemistry) Interpretation (model theory)
Zdroj:	Monatshefte f�r Chemie. 105:354-361
ISSN:	1434-4475 0026-9247
DOI:	10.1007/bf00907384
Popis:	In order to furnish a reliable interpretation of the1H-NMR spectrum of [2.2]metacyclophane (1) based on the ring current theory two basic conditions must be fullfilled: 1. Bond lengths angle deformations due to the puckered topology of the molecule must be taken into account. The geometry parameters can be deduced fromX-ray data. 2. The (fictive) reference chemical shift of the system (i.e. unperturbed by the “second” benzene ring) must be established since the Δ δ's ofBovey's ring current formula have to be related to a reference.
Databáze:	OpenAIRE
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