Synthesis of a Novel Lithocene that has Aromatic‐Like Nature with Nonaromatic Rings | Zendy

Saito Masaichi | Zendy; Kuwabara Takuya | Zendy; Ishimura Kazuya | Zendy; Nagase Shigeru | Zendy

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Synthesis of a Novel Lithocene that has Aromatic‐Like Nature with Nonaromatic Rings

Author(s) -

Saito Masaichi,

Kuwabara Takuya,

Ishimura Kazuya,

Nagase Shigeru

Publication year - 2011

Publication title -

chemistry – an asian journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.18

H-Index - 106

eISSN - 1861-471X

pISSN - 1861-4728

DOI - 10.1002/asia.201100619

Subject(s) - cyclopentadienyl complex , aromaticity , recrystallization (geology) , chemistry , stereochemistry , organic chemistry , molecule , biology , catalysis , paleontology

Recrystallization of 1,2‐dilithiobistannole 1 with [12]‐crown‐4 afforded novel lithocene 2 , which is the first metallocene in which the two cyclopentadienyl (Cp)‐like ligands are directly bonded without any bridging group. The high‐field 7 Li resonance and negative NICS(1) value suggest considerable aromatic character of 2 , while the stannole rings are nonaromatic with CC bond alternation (see scheme).

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