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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.
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 ]
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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).
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.
A story structure, narrative structure, or dramatic structure (also known as a dramaturgical structure) is the structure of a dramatic work such as a book, play, or film. There are different kinds of narrative structures worldwide, which have been hypothesized by critics, writers, and scholars over time.
In 2000, McKee won the 1999 International Moving Image Book Award for his book Story (Regan Books/HarperCollins). The book has become required reading for film and cinema schools at Harvard, Yale, UCLA, USC and Tulane universities. [4] [5] The book was on the Los Angeles Times best-seller list for 20 weeks. It is translated into more than 20 ...
Apocalyptic fiction is a subgenre of science fiction that is concerned with the end of civilization due to a potentially existential catastrophe such as nuclear warfare, pandemic, extraterrestrial attack, impact event, cybernetic revolt, technological singularity, dysgenics, supernatural phenomena, divine judgment, climate change, resource depletion or some other general disaster.