Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 7521-41-7, Name is 2-Aminonicotinaldehyde, molecular formula is C6H6N2O, belongs to pyridine-derivatives compound, is a common compound. In a patnet, author is Trinh, Jennifer, once mentioned the new application about 7521-41-7, Name: 2-Aminonicotinaldehyde.
Quantum criticality and entropy transfer in spin chains and planes-Pyridine oxide copper salts
We present magnetic field-dependent specific heat (C) data for [Cu(pyO)(6)](NO3)(2) (pyO = pyridine oxide) (CPN), a molecular salt shown to be quasi-1D, and for a quasi-2D analogue, [Cu(pyO)(6)](BF4)(2) (CPB). For CPN, a sharp feature indicating 3D ordering is observed at 0.16K in zero-field. As the field, H, is increased, the ordering temperature first increases, as expected for quasi-1D antiferromagnets, before decreasing rapidly for H above 3T. The field also transfers the entropy of short-range ordering (SRO) in the spin chains into the 3D ordering peak. At our lowest accessible temperature, T similar to 0.096K, C/T exhibits an enhanced peak at the critical field. Qualitatively similar behavior is found in CPB. These results demonstrate a potentially powerful new materials route to study quantum phase transitions.
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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem