title: Rich coordination of Nd3+ in Mg2Nd13(BO3)8(SiO4)4(OH)3, derived from high-pressure/high-temperature conditions.
abstract: A neodymium borosilicate, Mg(2)Nd(13)(BO(3))(8)(SiO(4))(4)(OH)(3) (MgNdBSi-1), was obtained from a high-temperature (1400 °C), solid-state reaction under high-pressure conditions (4.5 GPa). MgNdBSi-1 contains six different types of Nd(3+) coordination environments with three different ligands: BO(3), SiO(4), and OH groups. Mg(2+) cations are only bond to BO(3) groups and form porous two-dimensional layers based on 12-membered ring fragments. Surprisingly, the OH groups are retained at high temperature and reside at the center of Mg-BO(3) rings.
authors.affiliation: Institut für Geowissenschaften, Universität zu Kiel, 24118 Kiel, Germany.
authors.forename: Shijun
authors.initials: S
authors.lastname: Wu
authors.forename: Philip
authors.initials: P
authors.lastname: Kegler
authors.forename: Shuao
authors.initials: S
authors.lastname: Wang
authors.forename: Astrid
authors.initials: A
authors.lastname: Holzheid
authors.forename: Wulf
authors.initials: W
authors.lastname: Depmeier
authors.forename: Thomas
authors.initials: T
authors.lastname: Malcherek
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Alekseev
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Albrecht-Schmitt