Cyclic tungstoselenites based on {Se2W12} units.
The reaction of Na2WO4 and SeO2 under moderately acidic conditions yielded a novel 39-tungsto-6-selenite, [(Se2W12O46(WO(H2O))3](24-) (1), isolated as Na24[H6Se6W39O144]·74H2O. The macrocyclic polyanion consists of three {Se2W12} fragments connected via three trans-{WO(H2O)}(4+) groups. The same {Se2W12} building block is present in the structure of [(Se2W12O46)2{Mn2Cl(H2O)2}{Mn(H2O)2}2(SeO)2](13-) (2), which was obtained from the same reagents in the presence of MnCl2. The compounds were characterized by single-crystal X-ray diffraction, (77)Se NMR, Fourier transform infrared, and Raman spectroscopy.
Nikolaev Institute of Inorganic Chemistry , Prospekt Lavrentyeva 3, 630090 Novosibirsk, Russia.
Irina V
IV
Kalinina
Eugenia V
EV
Peresypkina
Natalya V
NV
Izarova
Fiona M
FM
Nkala
Ulrich
U
Kortz
Nikolay B
NB
Kompankov
Nikolay K
NK
Moroz
Maxim N
MN
Sokolov
D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D003500:Cyclization; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D020887:Selenious Acid / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*
D056831:Coordination Complexes; D020887:Selenious Acid; D014414:Tungsten