A compound ##STR00001## in which n is 0, 1, 2, or 3; R.sup.1, R.sup.2, R.sup.7, and R.sup.8 are each independently alkyl group, including cycloalkyl, an alkylaryl group, or an aryl group, optionally with one or more heteroatoms, with the proviso that R.sup.1 and R.sup.2 can together form a cycloalkylene group and, independently, R.sup.7 and R.sup.8 can together form a cycloalkylene group; Y is an oxygen free radical, a sulfur free radical, OR.sup.9 or SR.sup.9; R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.9 are each independently H or an alkyl group, a cycloalkyl group, an aryl group, or an alkylaryl group, optionally with one or more heteroatoms; and compositions, such as basecoat and clearcoat coating compositions, containing such compounds.