title: Ammonium ytterbium(III) diphosphate(V).
abstract: The title compound, NH(4)YbP(2)O(7), crystallizes in the KAlP(2)O(7) structure type and consists of distorted YbO(6) octa-hedra and bent P(2)O(7) (4-) diphosphate units forming together a three-dimensional network. There are channels in the structure running along the c axis, where the NH(4) (+) cations are located. They are connected via N-H⋯O hydrogen bonds to the terminal O atoms of the diphosphate anions.
authors.forename: Karla
authors.initials: K
authors.lastname: Fejfarová
authors.forename: Rachid
authors.initials: R
authors.lastname: Essehli
authors.forename: Brahim
authors.initials: B
authors.lastname: El Bali
authors.forename: Michal
authors.initials: M
authors.lastname: Dušek