I-ull close coupling calculation\ of magnetic transitions m 11~: + 112 collision\ arc rcportcd. The results arc an.llyrcd u\mp, the uncoupled space frame approach of Kouri and Shimom. This enables one to study the m:qnetic trantitlon T-matnccs as a function of orbital angular momentum quantum number 1. The results for transitions which .:rc cl.lstlc m rotor st.itc i arc found to be dominated by I=-conserving transitlons. 1 hose which are melastlc in j arc dominated by jpxnsaving trmsitions for very low 1 hut at h@ler 1 values, the nonj,-conserving tr,rnsit~onr dommstc. 'Ihe result\ for Ilu + 142 are conslctent with the ruccut studios of Shimoni and Kouri of the coupled states npprouirnntion. * R.A. Welch Foundation postdoctoral fellow, 1976-1977, under Welch I'ounddtion Grant 11-608. * Supported under National Science Foundation grants MPS 74-l 37 19 and CHE 76-18970. * Acknowledgement is made to the donors of the Petroleum Kcsearch Fund, adruinistcred by the ACS, for p.mti.ll support of this rewarch, during the Spring, 1977. l See, c-g.. the original works of Curtiss et al. [ I], Curttss [2], and Jacob and Wick [ 31. For the relation between R and P hclicitics, see refs. [ 4-7 1. Also see rcfs. [ 8,9]. t The I-labeled CS was first given by McGuire and Kouri [ 111, and the J-labclcd CS was given at the same tm11: by P.lck [ 12].17w prcfcrability of I-labeling was demonstrated by Shimoni and Kouri [ 131 and indepcndcntly and ~nnultaneou~ly by parker and Pack [ 141. Volunlc 52, nur11lJcr 2 CHEMICAL PHYSICS LETTERS 1 Dccenlbcr 1977 * See also the earlier study of Kouri and McCuire 121) where the effect of I-dommance was first obscrvcd in C'S calculations tor Li+-tl2, and also the work of Kouri and Shimoni 122).