An ab initio molecular treatment of the charge transfer process in collision of C2+ ions with the isoelectronic CO and N-2 targets has been performed. The corresponding rate coefficients in the 400-50 000 K temperature range are compared to recent measurements of Gao and Kwong at T-equiv = 1.17 x 10(4) K. A global satisfactory agreement is observed and some general behaviour may be deduced. (C) 2010 Elsevier B.V. All rights reserved.