Search results
Results from the WOW.Com Content Network
Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn 2 O 7 Manganese heptoxide is a volatile liquid with an oily consistency. It is a highly reactive and powerful oxidizer that reacts explosively with nearly any organic compound.
It may refer more specifically to the following manganese minerals: Birnessite, (Na,Ca) 0.5 (Mn IV,Mn III) 2 O 4 · 1.5 H 2 O; Buserite, MnO 2 ·nH 2 O; Hausmannite, Mn II Mn III 2 O 4; Manganite, Mn III O(OH)
MnO has the distinction of being one of the first compounds [4] to have its magnetic structure determined by neutron diffraction, the report appearing in 1951. [5] This study showed that the Mn 2+ ions form a face centered cubic magnetic sub-lattice where there are ferromagnetically coupled sheets that are anti-parallel with adjacent sheets.
It has a primitive cubic structure with 20 atoms per unit cell at two types of sites, which is as complex as that of any other elemental metal. [23] It is easily obtained as a metastable phase at room temperature by rapid quenching. It does not show magnetic ordering, remaining paramagnetic down to the lowest temperature measured (1.1 K). [23 ...
The structure is distorted due to the Jahn–Teller effect. [3] At room temperature Mn 3 O 4 is paramagnetic , below 41-43 K, it is ferrimagnetic [ 12 ] although this has been reported as reducing in nanocrystalline samples to around 39 K. [ 13 ]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
α-Mn 2 O 3 has the cubic bixbyite structure, which is an example of a C-type rare earth sesquioxide (Pearson symbol cI80, space group Ia 3, #206). The bixbyite structure has been found to be stabilised by the presence of small amounts of Fe 3+ , pure Mn 2 O 3 has an orthorhombic structure ( Pearson symbol oP24, space group Pbca, #61).
Main page; Contents; Current events; Random article; About Wikipedia; Contact us