Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about is helpful to your research. SDS of cas: 20439-47-8
A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 20439-47-8, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 20439-47-8, Name is (1R,2R)-Cyclohexane-1,2-diamine, molecular formula is C6H14N2. In a Article, authors is Mizuta, Tsutomu，once mentioned of 20439-47-8
The crystal structures of the diastereomeric salt pair, Lambda-lel3-(d-tart)*3H2O (1) and Lambda-lel3-(d-tart)*5H2O (2) (chxn=trans-1,2-cyclohexanediamine and d-tart=(+)-(R,R)-tartrate dianion), have been determined by a single-crystal X-ray diffraction techniques.Crystal 1 is orthorhombic with the space group P212121, a=10.093(2), b=13.589(4), c=22.011(4) Angstroem, and Z=4.Crystal 2 is also orthorhombic with the same space group, a=11.197(2), b=13.102(2), c=22.402(2) Angstroem, and Z=4.In 1, the d-tart ion makes a familiar face-to-face contact with the Lambda complex, in which the two alcoholic and one carboxylic O atoms of the d-tart ion are involved in the multiple hydrogen bonds to the three H-N groups on the triangular face of the complex.This contact mode resembles the one found earlier in the chloride d-tart salt of the corresponding Lambda Co(III) complex, Lambda-lel3-Cl(d-tart)*2H2O (3).On the other hand, no such face-to-face contact is present in 2, though it has been found in the corresponding Lambda Co(III) complex, Lambda-lel3-Cl(d-tart)*2H2O (4) in which the d-tart ion is obliged to rotate the distal carboxylato group so as to avoid the steric repulsion otherwise imposed on it by one of the bulky chxn ligands.Detailed comparison of the above four crystal structures revealed that the packing modes of the respective complex cations and couterions are surprisingly similar to one another, indicating that the absence of such a face-to-face contact in 2 is attributed to the weaker affinity of the d-tart ion for the divalent Lambda Ni(II) complex, rather than to the steric demands of the crystal packing in 2.In 2 are found two deformed contact modes similar to each other, in which the d-tart ion directs its three O atoms to the triangular face, but only one of them is hydrogen-bonded to one or two of the three H-N groups on the triangular face.The d-tart ion thereby avoids the steric repulsion that would be imposed on it if it should make a usual face-to-face contact with the Lambda complex.
Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about is helpful to your research. SDS of cas: 20439-47-8
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI