A New Sandwich Type Trransition Metal Substituted Polyoxotungstate under Hydrothermal Conditions: [NH3(CH2)(4)NH3](6)[Co-4(H2O)(2)(B-alpha-GeW9O34)(2)]}center dot 7H(2)O

作者：Han Qiu Xia; Liu Yun; Li Jie; Wang Jing Ping^*

来源：Chinese Journal of Structural Chemistry, 2009, 28(1): 25-28.

• heteropolyanion
• hydrothermal
• crystal structure
• sandwich

A new sandwich transition metal substituted polyoxotungstate, [NH3(CH2)(4)NH3](6) [Co-4(H2O)(2)(B-alpha-GeW9O34)(2)]center dot 7H(2)O 1, was hydrothermally synthesized and characterized by IR spectra and single-crystal X-ray diffraction. The single-crystal X-ray analysis reveals that the crystal crystallizes in monoclinic system, space group P2(1)/c with a = 16.6073(6), b = 15.3333(5), c = 19.9869(7) angstrom, beta = 103.41 (1)degrees, M-r = 5481.38, V = 4950.8(3) angstrom(3), Z = 2, D-c = 3.677 g/cm(3), F(000) = 4900, mu(MoK alpha) = 22.165 mm(-1), GOOF= 1.005, the final R = 0.0228 and wR = 0.0527. The crystal structure indicates that the [Co-4(H2O)(2)(B-alpha-GeW9O34)(2)](12-) polyoxoanion contains two trivacant Keggin [B-alpha-GeW9O34](10-) fragments in a staggered fashion linked via a rhomb-like Co4O16 group in a centrosymmetric arrangement (C-2h symmetry) leading to a sandwich-type structure.

• 出版日期2009
• 单位河南大学