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2003•Angewandte Chemie International EditionRequires access

A Diboracyclopropane with a Planar‐Tetracoordinate Carbon Atom and a Triborabicyclobutane

Yüksel Şahin, Carsten Präsang, Matthias S. Hofmann, Govindan Subramanian, Gertraud Geiseler, Werner Massa, Armin Berndt

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Abstract

Four-coordinate in a three-membered ring and thereby planar: The chemical shift of the skeletal carbon atom of 1, which was generated and spectroscopically characterized at −90 °C, agrees very well with that computed for the model 2, but differs by 70 ppm from that of the similarly substituted, but distorted-tetrahedral carbon atom in 3. R=SiMe3, Dur=2,3,5,6-tetramethylphenyl.

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What this paper is about

Four-coordinate in a three-membered ring and thereby planar: The chemical shift of the skeletal carbon atom of 1, which was generated and spectroscopically characterized at −90 °C, agrees very well with that computed for the model 2, but differs by 70 ppm from that of the similarly substituted, but distorted-tetrahedral carbon atom in 3. R=SiMe3, Dur=2,3,5,6-tetramethylphenyl.

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Available abstract

Four-coordinate in a three-membered ring and thereby planar: The chemical shift of the skeletal carbon atom of 1, which was generated and spectroscopically characterized at −90 °C, agrees very well with that computed for the model 2, but differs by 70 ppm from that of the similarly substituted, but distorted-tetrahedral carbon atom in 3. R=SiMe3, Dur=2,3,5,6-tetramethylphenyl.

Key concepts: Tetracoordinate, Carbon atom, Atom (system on chip), Tetrahedron, Planar, Carbon fibers, Ring (chemistry), Crystallography

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