Any suggestion is good.
Dear Sophiaa,
one value, as found in this paper: http://roaldhoffmann.com/sites/all/files/219s_0.pdf
2.30 A.
Best regards,
Aleksey.
Hello Aleksey E. Kuznetsov,
I am sorry that it has been so long before I saw your message. I can't get this paper. So could you send me it? My email is [email protected]
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