High hydrogen pressure technique up to 1.2 GPa has been used for synthesis of novel hydrides in RFe2 Laves phases (R=Gd, Tb, Dy, and Ho) compounds as well as in pseudobinary ZrCo2-xFex and YxDy1-xMn2 Laves phases. Existence of new orthorhombic hydrides HoFe2H5, and DyFe2H5, isostructural with YFe2H5, was found. whereas GdFe2H5 and TbFe2H5 kept the cubic C15 lattice. Pseudobinary Zr(FexCo1-x)(2)D-y (2 <= y <= 4) hydrides were synthesized and their stability was discussed as a function of Fe/Co content. It was revealed that the formation of non-interstitial YMn2H6-type Fm-3m hydrides is possible in the whole range of pseudobinary (YxDy1-x)Mn-2 compositions. (C) 2010 Elsevier B.V. All rights reserved.