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Exceptionally Long (≥2.9 Å) C−C Bonds between [TCNE]− Ions: Two-Electron, Four-Center π–π C−C Bonding in π-[TCNE]22−

✍ Scribed by Juan J. Novoa; Pilar Lafuente; Rico E. Del Sesto; Joel S. Miller

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 135 KB
Volume: 40
Category: Article
ISSN: 0044-8249
DOI: 10.1002/1521-3773(20010702)40:13<2540::aid-anie2540>3.0.co;2-o

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Exceptionally Long (≥2.9 Å) C−C Bonds be

Exceptionally Long (≥2.9 Å) C−C Bonds between [TCNE]− Ions: Two-Electron, Four-Center π*–π* C−C Bonding in π-[TCNE]22−

✍ Juan J. Novoa; Pilar Lafuente; Rico E. Del Sesto; Joel S. Miller 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 136 KB

## Dedicated to the memory of Linus Pauling on the occasion of the 100th anniversary of his birth We present here an exceptionally long CÀC bonding interaction that has spectroscopic (IR and UV/Vis), structural, and magnetic properties expected for a bond and that complies with Paulings definition

Exceptionally Long (≥2.9 Å) CC Bonding I

Exceptionally Long (≥2.9 Å) CC Bonding Interactions in π-[TCNE]22− Dimers: Two-Electron Four-Center Cation-Mediated CC Bonding Interactions Involving π* Electrons

✍ Rico E. Del Sesto; Joel S. Miller; Pilar Lafuente; Juan J. Novoa 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 359 KB

Three groups of singlet ground state [TCNE](2) (2-) (TCNE=tetracyanoethylene) dimers with characteristic intradimer CC separations (r) and dihedral angles (d) [i.e., group S(t) (r approximately 1.6 A; d=180 degrees ), L(t) (r approximately 3.5 A; d=180 degrees ), and L(c) (r approximately 2.9 A; d=