Hydrothermal synthesis and crystal structure of a heteropolyoxotungstate formed by sandwich-type heteropolyanion [Gd(PW(11)O(39))(2)](11-) and reduced [Cu(en)(2)](+) cations

作者：Liu Ying Hong; Guo Gui Ling; Wang Jing Ping^*

来源：Journal of Coordination Chemistry, 2008, 61(15): 2428-2436.

DOI：10.1080/00958970801914793

• polyoxometalates
• lanthanide
• sandwich-type
• hydrothermal synthesis

A heteropolyoxotungstate, [Cu(en)(2)](2)H(8)[Gd(PW(11)O(39))(2)] (H(2)en)(0.5) center dot 3H(2)O (1), has been hydrothermally synthesized and characterized by IR, XPS, TGA and single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P (1) over bar, with a = 12.651(2) angstrom(3), b = 20.559(3) angstrom(3), c = 21.729(3) angstrom(3), alpha = 71.379(2), beta = 82.829(2), gamma = 75.532(2)degrees, V = 5179.5(14) angstrom(3), Z = 2, R(1) = 0.0702 and R(2) = 0.1479. The heteropolyanion is composed of two monovacant [alpha-PW(11)O(39)](7-) Keggin moieties linked via a Gd atom leading to a sandwich-type structure. The Gd center is in a distorted square antiprismatic coordination environment with eight oxygen atoms, four from each of the two [alpha-PW(11)O(39)](7-) moieties.

• 出版日期2008
• 单位河南大学