Archives for Chemistry Experiments of 41203-22-9

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Application of 41203-22-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.41203-22-9, Name is 1,4,8,11-Tetramethyl-1,4,8,11-tetraazacyclotetradecane, molecular formula is C14H32N4. In a Article,once mentioned of 41203-22-9

Reaction of the macrocyclic tetradentate tertiary amine N-tetramethylcyclam with trimethylaluminium produced the crystalline product 4.The compound crystallizes in the orthorhombic space group Pbca with unit cell parameteres a 13.928(5), b 18.522(6), c 1.4538(6) Angstroem, and Dcalc 0.96 g cm-3 for Z = 4.Least-squares refinement based on 1432 observed reflections led to a final R factor of 0.034, Rw = 0.037.The molecule resides on a crystallographic center of symmetry.The four nitrogen atoms are coplanar.The macrocyclic ligand is greatly distorted as the four Al(CH3)3 units have essentially turned it “inside-out” by forcing the nitrogen atoms from the interior cavity to the macrocyclic perimeter.The independent Al-N distances of 2.093(3) and 2.102(3) Angstroem are among the longest reported.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI