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The structure of small doubly negative carbon clusters

✍ Scribed by T. Sommerfeld; M.K. Scheller; L.S. Cederbaum

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
522 KB
Volume
209
Category
Article
ISSN
0009-2614

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✦ Synopsis

Recently, experimental evidence has been obtained for the existence of dianionic carbon clusters as small as C:-. So far, no theoretical evidence has been achieved for the electronic stability of C+-, which is attributed to the underlying assumption of C:-having a linear structure. Linear, quasi-linear and trigonal planar atomic arrangements for C:-are discussed At the latter structure C:-is predicted to be both stable with respect to vertical and adiabatic electron autodetachment and stable with respect to all fragmentation pathways. The reasons leading to the electronic stability of the trigonal C:-dianion are discussed and illuminated by drawing a connection with the structurally related MX$-alkali halides. Some remarks are made on larger dianionic carbon clusters.

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