In:
Angewandte Chemie, Wiley, Vol. 128, No. 18 ( 2016-04-25), p. 5621-5625
Abstract:
Antiaromaticity, as introduced in 1965, usually refers to monocyclic systems with 4 n π electrons. This concept was extended to all‐metal molecules after the observation of Li 3 Al 4 − in the gas phase. However, the solid‐phase counterparts have not been documented to date. Herein, we describe a series of all‐metal antiaromatic anions, [Ln( η 4 ‐Sb 4 ) 3 ] 3− (Ln=La, Y, Ho, Er, Lu), which were isolated as the K([2.2.2]crypt) salts and identified by single‐crystal X‐ray diffraction. Based on the results obtained from the chemical bonding analysis, multicenter indices, and the electron‐counting rule, we conclude that the core [Ln( η 4 ‐Sb 4 ) 3 ] 3− fragment of the crystal has three locally π‐antiaromatic Sb 4 fragments. This complex represents the first locally π‐antiaromatic all‐metal system in the solid state, which is stabilized by interactions of the three π‐antiaromatic units with the central metal atom.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v128.18
DOI:
10.1002/ange.201600706
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
505868-5
detail.hit.zdb_id:
506609-8
detail.hit.zdb_id:
514305-6
detail.hit.zdb_id:
505872-7
detail.hit.zdb_id:
1479266-7
detail.hit.zdb_id:
505867-3
detail.hit.zdb_id:
506259-7
Bookmarklink