A polyoxotetradecamolybdate cluster [Mo(14)O(38)(OAc)(6)](2-), which has a lacunary core of the Wells-Dawson structure, is isolated by the reduction of [Mo(6)O(19)](2-). The Mo(14) core is comprised of a mixed valence of [Mo(V)(4)Mo(VI)(10)], exhibiting multi-step reversible redox processes that experience both oxidation and reduction.

An unprecedented extended architecture, Na(8)H(2)L(H(2)enMe)(4){Mn(H(2)O)(2)[(W(4)Mn(4)O(12))(P(2)W(14)O(54))(2)]}.17H(2)O, (, Na(8)H(2)L(H(2)enMe)(4)[].17H(2)O, enMe = 1,2-diaminopropane) constructed from double-Dawson type polyoxoanions (DDTP) has been successfully synthesized under hydrothermal conditions. Single-crystal X-ray diffraction analysis is carried out on , which crystallizes in th...

Films based on electrostatic interactions between tetracationic porphyrin and Dawson type polyoxometalate are formed by the so called layer-by-layer method. Their photovoltaic performances are investigated by photocurrent transient measurements which showed significant photocurrent response.

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The fundamental importance of the characteristics of the cerebral electrical response to a simple pulse of light in man is evidenced by the number of workers who have provided information about its features from conventional recordings. Detailed description awaited the development of more powerful analytical tools. With the recognition of the usefulness of photographic superimposition, correlat...