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A New Keggin Tungstocobaltate Decorated by Zinc(II) Complex Groups: [Zn(2,2′‐bipy) 3 ] 3 {[Zn(2,2′‐bipy) 2 (H 2 O)] 2 ‐[HCoW 12 O 40 ] 2 }·H 2 O
Author(s) -
WANG Hong,
CHENG Cungui,
TIAN Yumei
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990183
Subject(s) - chemistry , orthorhombic crystal system , crystallography , zinc , crystal structure , hydrothermal synthesis , hydrogen bond , molecule , infrared spectroscopy , hydrothermal circulation , inorganic chemistry , organic chemistry , seismology , geology
A new organic‐inorganic hybrid compound based on Keggin tungstocobaltate decorated by zinc(II) coordination groups, [Zn(2,2′‐bipy) 3 ] 3 {[Zn(2,2′‐bipy) 2 (H 2 O)] 2 [HCoW 12 O 40 ] 2 }·H 2 O (bipy=bipyridine), has been synthesized under hydrothermal conditions and characterized by elemental analyses, IR, TG analyses and X‐ray single crystal diffraction. This compound crystallizes in the orthorhombic system, space group C 2 /c with a =46.966(9) ?, b =14.358(3) Å, c =26.154(5) Å, α = β = γ =90°, V =17637(6) Å 3 , and Z =4. The result of structure determination shows that the crystal structure is constructed from a mono‐supporting Keggin tungstocobaltate polyanion {[Zn(2,2′‐bipy) 2 (H 2 O)] 2 [HCoW 12 O 40 ] 2 } 6− , three [Zn(2,2′‐bipy) 3 ] 2+ cations and one water molecule. It is interesting that [Zn(1)(2,2′‐bipy) 3 ] 2+ cations are held together into a helix chain through hydrogen‐bonding interactions. Additionally, the compound is stable in air and shows intense photoluminescence at room temperature.