Rotational state distributions for the H-2 upsilon' = 0 product from the H + c-C4H8 and H + c-C5H10 abstraction reactions are reported for 1.6 eV collision energy. These results are compared to those previously obtained by us for the H + c-C6H12 reaction. The H-2(upsilon' = 0,j') rotational state distributions from the H + c-C5H10, and H + c-C6H12 reactions are identical, within experimental uncertainty. In contrast, the H + c-C4H8 reaction produces an H-2(upsilon' = 0, j') distribution that is much warmer. These results are interpreted through a model of the reaction dynamics that invokes the characteristic stereochemistry of the reactants. (C) 2002 Elsevier Science B.V. All rights reserved.