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• W3017777830 endingPage "6941" @default.
• W3017777830 startingPage "6923" @default.
• W3017777830 abstract "A novel family of five Mn-Te-CO complexes was prepared via facile syntheses: mono spirocyclic [Mn4Te(CO)16]2- (1), four-membered Mn2Te2 ring-type [Mn2Te2(CO)8]2- (2), hydride-containing square pyramidal [HMn3Te2(CO)9]2- (3), and dumbbell-shaped [Mn6Te6(CO)18]4- (4) and [Mn6Te10(CO)18]4- (5). Electron-precise complexes 4 and 5 exhibit unusual paramagnetism arising from two types of Mn atoms in different oxidation states, as determined by X-ray photoelectron spectroscopy, electron paramagnetic resonance, and density functional theory (DFT) calculations. The structural transformations from small-sized Mn4Te 1 and Mn2Te22 to the largest Mn6Te105 were controllable, the off/on magnetic-switched transformation between HMn3Te23 and 5 was reversible, and the magnetic transformation between Mn6Te64 and 5 was observed. Interestingly, the reversible dehydridation and hydridation between the HMn3Te2-based cluster 3 and [Mn3Te2(CO)9]- were successfully accomplished, in which the release of a high yield of H2 was detected by gas chromatography. In addition, upon the addition of CO, cluster 3 first forms a carbonyl-inserted intermediate [HMn3Te2(CO)10]2- (3'), detected by the high resolution ESI-MS, which is readily transformed to a dimeric dihydrido cluster [{HMn3Te2(CO)10}2]2- (6) with the introduction of O2. These low- to high-nuclearity complexes exhibit rich redox properties with semiconducting behavior in solids, possessing low but tunable energy gaps (1.06-1.62 eV) due to efficient electron transport via nonclassical C-H···O(carbonyl) interactions. The structural nature, reversible structural transformations, controllable on/off magnetic switches, electron communication networks, and associated chemical properties for hydrogen generation are discussed in detail and supported by DFT calculations, density of states, band structures, and noncovalent interaction analyses." @default.
• W3017777830 created "2020-05-01" @default.
• W3017777830 creator A5033539705 @default.
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• W3017777830 creator A5057977715 @default.
• W3017777830 creator A5075747288 @default.
• W3017777830 creator A5088036679 @default.
• W3017777830 date "2020-04-24" @default.
• W3017777830 modified "2023-10-12" @default.
• W3017777830 title "Manganese Telluride Carbonyl Complexes: Facile Syntheses and Exotic Properties—Reversible Transformations, Hydrogen Generation, Paramagnetic, and Semiconducting Properties" @default.
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