We’ll be discussing some of the latest developments in chemical about CAS: 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a Article，once mentioned of 499-40-1, Computed Properties of C12H22O11
The synthesis, crystal structures and magnetic properties of five new manganese compounds are reported. These include a linear trinuclear cluster [Mn(II)3(O2CCHMe2)6(dpa) 2]·2MeCN (1) (dpa = 2,2?-dipyridylamine), a tetranuclear cluster [Mn(II)2Mn(III)2O2(O 2CCMe3)6(bpy)2] (3) (bpy = 2,2?-bipyridine), and chain coordination polymers composed of cluster blocks such as Mn3, Mn3O, and Mn4O2 bridged by 2,2?-bipyrimidine (bpm) or hexamethylentetramine (hmta) ligands to give ([Mn(II)3(O2CCHMe2) 6(bpm)]·2EtOH)n (2), [Mn(II)2Mn(III) 2O2(O2CCHMe2)6(bpm)(EtOH) 4]n (4), and (([Mn(II)Mn(III)2O(O 2CCHMe2)6(hmta)2]·EtOH) n (5). The magnetic analysis of the compounds was achieved using a combination of vector coupling and full-matrix diagonalization methods. Susceptibility data for compound 1 was fitted using a vector coupling model to give g = 2.02(1) and 2J/kB = -5.38(2) K. To model the trimer chain, we used vector coupling for initial values of J1 and then diagonalization techniques to estimate J2 to give g = 1.98(1), 2J1/kB = -3.3(1) K and 2J2/kB = -1.0(1) K by approximating the system to a dimer of trimers. The analysis of 3 was made difficult by the mixture of polymorphs and the difficulties of a three-J model, while for 4 an analysis was not possible because of the size of the computation and the relative magnitudes of the three couplings. Compound 5 was modeled using the same techniques as 2 to give g = 1.99(1), 2J 1/kB = +32.5(2) K, 2J2/kB = -16.8(1) K, and 2J3/kB = +0.4(1) K. The combination of techniques has worked well for compounds 2 and 5 and thus opens up a method of modeling complex chains.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics