TY - JOUR
T1 - An inorganic double helix
T2 - Hydrothermal synthesis, structure, and magnetism of chiral [(CH3)2NH2]K4[V10O 10(H2O)2(OH)4(PO4) 7]·4H2O
AU - Soghomonian, Victoria
AU - Chen, Qin
AU - Haushalter, Robert C.
AU - Zubieta, Jon
AU - O'Connor, Charles J.
PY - 1993/3/12
Y1 - 1993/3/12
N2 - Very complicated inorganic solids can be self-assembled from structurally simple precursors as illustrated by the hydrothermal synthesis of the vanadium phosphate [(CH3)2NH2]K4[V10O 10(H2O)2(OH)4(PO4) 7]·4H2O, 1, which contains chiral double helices formed from interpenetrating spirals of vanadium oxo pentamers bonded together by P5+. These double helices are in turn intertwined with each other in a manner that generates unusual tunnels and cavities that are filled with (CH3)2NH2+ and K+ cations, respectively. The unit cell contents of dark blue phosphate 1, which crystallizes in the enantiomorphic space group P43 with lattice constants a = 12.130 and c = 30.555 angstroms, are chiral; only one enantiomorph is present in a given crystal. Magnetization measurements show that 1 is paramagnetic with ten unpaired electrons per formula unit at higher temperatures and that antiferromagnetic interactions develop at lower temperatures.
AB - Very complicated inorganic solids can be self-assembled from structurally simple precursors as illustrated by the hydrothermal synthesis of the vanadium phosphate [(CH3)2NH2]K4[V10O 10(H2O)2(OH)4(PO4) 7]·4H2O, 1, which contains chiral double helices formed from interpenetrating spirals of vanadium oxo pentamers bonded together by P5+. These double helices are in turn intertwined with each other in a manner that generates unusual tunnels and cavities that are filled with (CH3)2NH2+ and K+ cations, respectively. The unit cell contents of dark blue phosphate 1, which crystallizes in the enantiomorphic space group P43 with lattice constants a = 12.130 and c = 30.555 angstroms, are chiral; only one enantiomorph is present in a given crystal. Magnetization measurements show that 1 is paramagnetic with ten unpaired electrons per formula unit at higher temperatures and that antiferromagnetic interactions develop at lower temperatures.
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U2 - 10.1126/science.259.5101.1596
DO - 10.1126/science.259.5101.1596
M3 - Article
AN - SCOPUS:12044255856
SN - 0036-8075
VL - 259
SP - 1596
EP - 1599
JO - Science
JF - Science
IS - 5101
ER -