Structural assembly from phosphate to germanophosphate by applying germanate as a binder.
Structural assembly from phosphate to germanophosphate by applying germanate as a binder has been achieved. Two isotypic porous compounds, K3[M(II)4(HPO4)2][Ge2O(OH)(PO4)4]·xH2O (M(II) = Fe, Cd; x = 2 for Fe and 3 for Cd, denoted as KFeGePO-1 and KCdGePO-1, respectively), contain a known transition-metal phosphate (TMPO) layer, (∞)(2){[M2(HPO4)3]2–}, which is built from chains of trans-edge-sharing MO6 octahedra bridged by MO5 trigonal bipyramids that were further linked and decorated by phosphate tetrahedra. The layers are bound by infinite chains of GeO5(OH) octahedra, resulting in a 3D open-framework structure with 1D 12-ring channels that are occupied by K+ ions and water molecules. The curvature of the TMPO layers and shape of the 12-ring windows can be tuned by the transition metals because of their Jahn–Teller effect.
Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China. yaxihuang@xmu.edu.cn
Ya-Xi
YX
Huang
Biao
B
Liu
Lei
L
Wen
Xin
X
Zhang
Wei
W
Sun
Jun
J
Lin
Chun-Zuo
CZ
Huang
Rong-Chuan
RC
Zhuang
Jin-Xiao
JX
Mi
Jing-Tai
JT
Zhao
D005857:Germanium / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010710:Phosphates / Q000737:chemistry*
D008670:Metals; D010710:Phosphates; D005857:Germanium