%A ?. ?. ????? %A ?. ?. ???????? %A ?. ?. ?????? %A ?. ?. ?????????? %A ?. ?. ????? %A ?. ?. ???? %J ???????? ???????????? ???????? ???? ??????? %T ??????????i ??????i?? ???i??i? ? ??????????i? ???????i?????i??i? ????????i ?????? ?? ??? ???? AnBnO3n+2 %X The crystal layer perovskite-like structures (LPS) of five-slab phases Ca5-xSrxTiNb4O17 (x = 1, 2, 3, 4) have been determined by X-ray powder diffraction. The peculiarities of LPS of synthesized phases and the known five-slab compounds of the A5BIBII 4 O17 type have been analyzed and the regularities of the distribution of B-type cations in the five-slab perovskite-like structure of compounds and phases of the A5BIBII 4 O17 type have been determined. %N 1 %P 137-142 %D 2008 %I ??????????? ???????? ???? %L zu214066