Two new sandwich-type tungstobismuthates constructed from trivacant Keggin units, estertin and transition metals

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• 作者：Zan-Jiao Wang^a ; Lan-Cui Zhang^a ; ^{zhanglancui@lnnu.edu.cn} ; Zai-Ming Zhu^a ; Wei-Lin Chen^b ; Wan-Sheng You^a ; En-Bo Wang^b ; ^{wangeb889@nenu.edu.cn}
• 关键词：Sandwich-type tungstobismuthate ; Trivacant Keggin anion ; Estertin ; Transition metal
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：March, 2012
• 年：2012
• 卷：17
• 期：Complete
• 页码：151-154
• 全文大小：371 K

文摘

Two new sandwich-type tungstobismuthates containing carboxyethyltin groups and transition metals, Na₈K₂[{Co(H₂O)₃}₂{Sn(CH₂)₂COO}₂¡¤(B-¦Â-BiW₉O₃₃)₂]¡¤25H₂O (1) and K₁₀[{Mn(H₂O)₃}₂{Sn(CH₂)₂COO}₂¡¤(B-¦Â-BiW₉O₃₃)₂]¡¤30H₂O (2) have been synthesized in the aqueous solutions and characterized by IR, TG, NMR and XRD. Single crystal X-ray diffraction analysis reveals that two 3d-transition metal (TM) cations and two organometallic (OM) groups in the central belt of the two complexes are all sandwiched by two B-¦Â-[BiW₉O₃₃]^{9?/sup> units. The two compounds represent the first transition metal and carboxyethyltin-decorated polyoxometalate complexes. Structural analyses reveal that the reaction processes involving the ¦Á ?#xA0;¦Â isomerization of [BiW₉O₃₃]9?/sup> unit and the hydrolysis of ester group. Both compounds have high thermal stabilities.}