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In an article, published in an article, once mentioned the application of 21436-03-3, Name is (1S,2S)-Cyclohexane-1,2-diamine,molecular formula is C6H14N2, is a conventional compound. this article was the specific content is as follows.Safety of (1S,2S)-Cyclohexane-1,2-diamine
The first structurally characterized, quadruply bonded complexes containing chiral diamine ligands, [Mo2(O2CCF3)2 (S,S-dach)2(CH3CN)2] [BF4]2 (1), and [Mo2(O2CCF3)2 (R,R-dach)2(CH3CN)2] [BF4]2 (2); (dach = 1,2-diaminocyclohexane) were prepared by reactions of [Mo2(O2CCF3)2 (CH3CN)6][BF4]2 with S,S-dach and R,R-dach, respectively, in CH3CN. Their UV-Vis and circular dichroism (CD) spectra have been recorded and their structures determined by X-ray crystallography. Crystals of complexes 1 and 2 conform to the space groups P2 with two independent half molecules in the asymmetric unit. The two molecules have a similar structure consisting of a Mo2 unit bridged by two cis-trifluoroacetate ligands and chelated by two dach ligands. Two acetonitrile molecules are coordinated to the Mo centers along the Mo-Mo bond. The absorption wavelength at 507 nm for both 1 and 2 can be assigned to deltaxy ? deltaxy* transitions. The solution CD spectra of these two complexes show two prominent bands at 525 and 385 nm and form mirror images of each other. The solid CD spectra of complexes 1 and 2 show marked red-shift in the absorption energies as compared with those measured in solution. The one-electron static coupling mechanism was invoked to explain the CD spectra for these complexes and the second lowest energy bands were assigned to be deltaxy ? deltax2-y2 transitions.
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Reference:
Chiral Catalysts,
Chiral catalysts – SlideShare