An article Synthesis and characterization of an octanuclear nickel(II) polyoxometalate cluster WOS:000553315700001 published article about COMPLEXES; AZIDO; MN in [Yang, Zongfei; Yang, Xindi; Jin, Linyu; Dong, Kaili; Ma, Pengtao; Niu, Jingyang; Wang, Jingping] Henan Univ, Henan Key Lab Polyoxometalate Chem, Inst Mol & Crystal Engn, Coll Chem & Chem Engn, Kaifeng 475004, Henan, Peoples R China in 2020, Cited 29. Recommanded Product: Pyrazine-2-carboxylic acid. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5
A high-nuclearity nickel-substituted polyoxotungstate, Na6K5.5H4.5{[Ni-8(OH)(6)(H2O)(2)](CO3)(3)(SiW9O34)(2)}center dot 22H(2)O (1), has been obtained by the reaction of Na-10[alpha-SiW9O34]center dot 18H(2)O, Ni(NO3)(2)center dot 6H(2)O and K(2)CO(3)in aqueous solution and characterized by IR spectroscopy, single crystal X-ray diffraction, thermal gravimetric analysis and elemental analysis. Carbonate is not only used to adjust the pH of the solution, but also is a structure-stabilizing agent. The polyoxoanion {[Ni-8(OH)(6)(H2O)(2)](CO3)(3)(SiW9O34)(2)}(16-)(1a) can be regarded as two {[Ni-4(OH)(3)(H2O)](SiW9O34)} subunits connected by three carbonate groups, which represents the first polyanion containing an octanuclear nickel cluster based on trivacant Keggin-type polyoxotungstate {XW9} (X = heteroatom). The subunit {[Ni-4(OH)(3)(H2O)](SiW9O34)} can be viewed as a tetranuclear nickel cluster linked to a trivacant Keggin-type polyoxotungstate {SiW9O34}. Furthermore, magnetic measurements show that1exhibits antiferromagnetic interactions.
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Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
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