Poly[octakis(1H-imidazole-κN3)octa-μ-oxido-tetraoxidodicopper(II)tetravanadate(V)]

Chanthee, Songwuit; Saesong, Tongchai; Saphu, Watcharin; Chainok, Kittipong; Krachodnok, Samroeng

doi:10.1107/s1600536812008252

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References 9 publications

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“…Most of these are composed of the oxovanadate ion V 4 O 12 4− or (VO 3 ) n n− chain and a copper complex with substituted imidazoles as ligands [1]. Only three compounds contain unsubstituted imidazole (im = imidazole), namely enantiomers {[Λ-Cu(en)(im) 2 ][VO 3 ] 2 } n and {[Δ-Cu(en)(im) 2 ][VO 3 ] 2 } n [2] and [Cu(im) 4 ] 2 (V 4 O 12 ) [3]. There are only two compounds where an organic ligand is bound both to vanadium and copper atom: [{VO(O 2 ) 2 (im)} 2 {µ-Cu(im) 4 }] [4] and {Cu(im) 4 [(VO 2 F 2 (py)] 2 } (py = pyridine) [5].…”

Section: Introductionmentioning

confidence: 99%

Heterometallic Copper–Vanadium Compounds: Crystal Structures of Polymers [Cu(im)4(V2O4(mand)2)]n and [Cu(im)4(V2O4((S)-mand)2)]n·2nH2O (im = imidazole, mand = mandelato2−)

et al. 2019

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Two new 1D polymeric heterometallic copper-vanadium compounds were prepared. The polymers are constructed from [Cu(im) 4 ] 2+ cations that are coordinated to two terminal oxido ligands of [V 2 O 4 (mand) 2 ] 2− anions. The stronger coordination in [Cu(im) 4 V 2 O 4 (mand) 2 ] n (1) that contains the racemic mandelato ligand is manifested by a shorter Cu-O bond distance 2.4095(12) Å, while the weaker interaction in [Cu(im) 4 (V 2 O 4 ((S)-mand) 2 )] n ·2nH 2 O (2) is exhibited by Cu-O bond distances 2.4547(16) Å and 2.5413(16) Å. The vanadate anion in compound 2 carries only the (S)-enantiomer of the initial mandelic acid and differs from the anion in 1 in parallel cis orientation of the phenyl groups of the mandelato ligand. FT-IR spectroscopy was used for the confirmation of the coordination mode of mandelato ligand. Strong bands corresponding to the vibrations of carboxyl groups can be observed around 1650 and at 1344 cm −1 . The stretching vibration of deprotonated hydroxyl group in the mandelato ligand occurs at 1045 and 1065 cm −1 for 1 and 2, respectively. In addition, the very strong, characteristic band corresponding to ν(V=O) vibration can be observed at 931 cm −1 for 1 and 925 cm −1 for 2, as well as in Raman spectrum.Electronic supplementary material The online version of this article (https ://doi. Graphic AbstractThe polymeric structures of two new vanadium-copper heterometallic complexes are constructed from [Cu(imidazole) 4 ] 2+ cations that are coordinated to two terminal oxido ligands of [V 2 O 4 (mandelato) 2 ] 2− anions with different orientation of the phenyl groups depending on the chirality of the mandelato ligand.

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Section: Introductionmentioning

confidence: 99%

Heterometallic Copper–Vanadium Compounds: Crystal Structures of Polymers [Cu(im)4(V2O4(mand)2)]n and [Cu(im)4(V2O4((S)-mand)2)]n·2nH2O (im = imidazole, mand = mandelato2−)

et al. 2019

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Poly[octakis(1H-imidazole-κN³)octa-μ-oxido-tetraoxidodicopper(II)tetravanadate(V)]

Abstract: Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.003 Å; R factor = 0.028; wR factor = 0.073; data-to-parameter ratio = 16.7.In the title inorganic-organic hybrid compound, [

Cited by 1 publication

References 9 publications

Heterometallic Copper–Vanadium Compounds: Crystal Structures of Polymers [Cu(im)4(V2O4(mand)2)]n and [Cu(im)4(V2O4((S)-mand)2)]n·2nH2O (im = imidazole, mand = mandelato2−)

Heterometallic Copper–Vanadium Compounds: Crystal Structures of Polymers [Cu(im)4(V2O4(mand)2)]n and [Cu(im)4(V2O4((S)-mand)2)]n·2nH2O (im = imidazole, mand = mandelato2−)

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