TY - JOUR
T1 - Synthesis, crystal structure and calcination of three novel complexes based on 2-aminopyridine and polyoxometalates
AU - Gong, Yun
AU - Hu, Changwen
AU - Li, Hui
AU - Tang, Wang
AU - Huang, Kunlin
AU - Hou, Wenbin
PY - 2006/2/20
Y1 - 2006/2/20
N2 - Three novel complexes based on 2-aminopyridine and polyoxometalates (POMs) formulated as (C5N2H7)5H[P 2Mo5O23], 1, (C5N2H 7)6(H2O)2[V10O 28], 2, (C5N2H7)12(H 2O)2(CH3OH)[PMo12O 40]4, 3, were hydrothermally synthesized and structurally characterized by elemental analysis, IR, UV, TG and single crystal X-ray diffraction. Compounds 1, 2 and 3 consist of 2-aminopyridine cations together with different POMs, [P2Mo5O23]6-, [V10O28]6- and [PMo12O 40]3-, respectively. 2-Aminopyridine cations in 1 orderly link [P2Mo5O23]6- like ribbons via alternating N-H⋯O and C-H⋯O hydrogen bonding interactions and compound 1 exhibits one dimensional empty channel. It is resulted from that the weak interactions between [P2Mo5O23] 6- leave equal sized cavities in which 2-aminopyridine just fits. Whereas the varying distances between POMs in compounds 2 and 3 caused by their different interactions between POMs lead to the disorder of 2-aminopyridine. Heating compounds 1 and 3 at 600°C in air for 2 h yielded nanometer or micrometer-scale MoO3. Their different morphologies result from the different POMs and molecular arrays in their precursors.
AB - Three novel complexes based on 2-aminopyridine and polyoxometalates (POMs) formulated as (C5N2H7)5H[P 2Mo5O23], 1, (C5N2H 7)6(H2O)2[V10O 28], 2, (C5N2H7)12(H 2O)2(CH3OH)[PMo12O 40]4, 3, were hydrothermally synthesized and structurally characterized by elemental analysis, IR, UV, TG and single crystal X-ray diffraction. Compounds 1, 2 and 3 consist of 2-aminopyridine cations together with different POMs, [P2Mo5O23]6-, [V10O28]6- and [PMo12O 40]3-, respectively. 2-Aminopyridine cations in 1 orderly link [P2Mo5O23]6- like ribbons via alternating N-H⋯O and C-H⋯O hydrogen bonding interactions and compound 1 exhibits one dimensional empty channel. It is resulted from that the weak interactions between [P2Mo5O23] 6- leave equal sized cavities in which 2-aminopyridine just fits. Whereas the varying distances between POMs in compounds 2 and 3 caused by their different interactions between POMs lead to the disorder of 2-aminopyridine. Heating compounds 1 and 3 at 600°C in air for 2 h yielded nanometer or micrometer-scale MoO3. Their different morphologies result from the different POMs and molecular arrays in their precursors.
KW - Crystal structure
KW - H-bond
KW - Molecular array
KW - Nanometer
KW - Polyoxometalates
KW - Synthesis
UR - http://www.scopus.com/inward/record.url?scp=33144457999&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2005.09.009
DO - 10.1016/j.molstruc.2005.09.009
M3 - Article
AN - SCOPUS:33144457999
SN - 0022-2860
VL - 784
SP - 228
EP - 238
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
IS - 1-3
ER -