TY - JOUR
T1 - A Metal-Rich Fluorinated Indium Phosphate, 4[NH3(CH2)3NH3]·3[H 3O]·[In9(PO4)6(HPO 4)2F16]·3H2O, with 14-Membered Ring Channels
AU - Williams, Ian D.
AU - Yu, Jihong
AU - Du, Hongbin
AU - Chen, Jiesheng
AU - Pang, Wenqin
PY - 1998
Y1 - 1998
N2 - The organically templated 3-D open-framework metal-rich phosphate 4[NH3(CH2)3NH3]· 3[H3O]·[In9(PO4)6(HPO 4)2F16]·3[H2O] has been synthesized hydrothermally and its structure determined by single-crystal X-ray diffraction. The compound is monoclinic, P21/n, a = 13.616(2) Å, b = 9.372(2) Å, c = 23.293(4) Å, β= 99.44(2)°, V = 2932.1(9) Å3, R = 0.034, Rw = 0.038. It was characterized further using TGA, 31P NMR, and elemental analysis, which supported the above formulation. The compound has a complex system of channels, which feature large elliptical 6.5 × 14 Å cavities resulting from 14-membered rings. An unusually high degree of fluorination is found for this compound resulting from use of 8 molar equivs of HF in its preparation. The fluorides occupy both terminal and bridging environments around the indium. The former are involved in hydrogen bonding to countercations, and the latter are critical to corner sharing of In octahedra to create In3 polyhedral subunits. The anion framework can be described in terms of a pillared layer structure in which corrugated sheets of formula [In9(PO4)6F16]7- are pillared via the (HPO4)2- groups.
AB - The organically templated 3-D open-framework metal-rich phosphate 4[NH3(CH2)3NH3]· 3[H3O]·[In9(PO4)6(HPO 4)2F16]·3[H2O] has been synthesized hydrothermally and its structure determined by single-crystal X-ray diffraction. The compound is monoclinic, P21/n, a = 13.616(2) Å, b = 9.372(2) Å, c = 23.293(4) Å, β= 99.44(2)°, V = 2932.1(9) Å3, R = 0.034, Rw = 0.038. It was characterized further using TGA, 31P NMR, and elemental analysis, which supported the above formulation. The compound has a complex system of channels, which feature large elliptical 6.5 × 14 Å cavities resulting from 14-membered rings. An unusually high degree of fluorination is found for this compound resulting from use of 8 molar equivs of HF in its preparation. The fluorides occupy both terminal and bridging environments around the indium. The former are involved in hydrogen bonding to countercations, and the latter are critical to corner sharing of In octahedra to create In3 polyhedral subunits. The anion framework can be described in terms of a pillared layer structure in which corrugated sheets of formula [In9(PO4)6F16]7- are pillared via the (HPO4)2- groups.
UR - http://www.scopus.com/inward/record.url?scp=0000001759&partnerID=8YFLogxK
U2 - 10.1021/cm970521u
DO - 10.1021/cm970521u
M3 - Article
AN - SCOPUS:0000001759
SN - 0897-4756
VL - 10
SP - 773
EP - 776
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 3
ER -