The interaction of the chromium carbonyl hydrides HCr2(CO)(10)(-) or HCr(CO
)(5)(-) with Yb(acac)(3). 3H(2)O has been investigated, and the experimenta
l conditions leading to the isolation of ytterbium-chromium carbonyl comple
x species are reported. Formulation of the coordination compounds produced
by such interactions has been proposed on the basis of analytical data and
IR spectroscopy. (C) 2001 Elsevier Science B.V. All rights reserved.