The numerical values in the sixth and seventh columns of table 1 of the paper
Molec. Phys., 1999, 96, 1185-1188 are not correct. Consequently, some of the
comments made in the paper are wrong. The corrected version of table 1 is
reprinted here and the results are briefly discussed.Comment: 2 pages; Erratum to Molec. Phys., 1999, 96, 1185-1188; to be
published in Molec. Phy