Application of 16858-01-8, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.16858-01-8, Name is Tris(2-pyridylmethyl)amine, molecular formula is C18H18N4. In a article，once mentioned of 16858-01-8
A novel series of dinuclear squarato-bridged copper(II) and nickel(II) complexes [Cu2(TPA)2(mu1,3-C 4O4)](ClO4)2·4H2O (1), [Cu2(MeDPA)2(mu1,3-C4O 4)(H2O)4](ClO4)2 (2) and [Ni2(TPA)2(mu1,2-C4O 4)(H2O)2](ClO4)2 (3) [C4O42- = dianion of 3,4-dihydroxycyclobut-3- en-1,2-dione (squaric acid), MeDPA = N-methylbis(2-pyridylmethyl)amine, TPA = tris(2-pyridylmethyl)amine] were synthesized and structurally characterized by X-ray crystallography. The spectral and structural characterizations as well as their magnetic properties are reported. In this series, the structures consist of the ClO4- groups as counterions and the C 4O42- anions bridging the two MII centers in a mu-1,3- (1 and 2) or in a mu-1,2-bis(monodentate) (3) bonding fashion. The coordination geometry around the five-coordinate CuII centers in 1 is a distorted trigonal bipyramid, where the coordination environment is achieved by the four N-donor atoms of the TPA ligand and one oxygen atom of the bridging squarato ligand. The complexes 2 and 3 adopt a distorted octahedral geometry. The six-coordinate 4+2 envi-ronment in 2 is achieved by the three N-atoms of the MeDPA ligand, by an oxygen atom of a bridging squarato ligand and, at longest distances, by two oxygen atoms from coordinated water molecules. In the nickel complex 3, the geometry is attained by the four N-atoms of TPA and by two oxygen atoms supplied by a coordinated water molecule and by a bridging squarato ligand. The results manifested the effects of the blocking amine variations on the structure and on the bonding mode of the bridging squarato ligand. The complexes show antiferromagnetic coupling with |J| = 9.1 and 1.2 cm-1 in the mu-1,3-bridged squarato compounds 1 and 2, and with J = -1.4cm-1 in the corresponding mu-1,2-bridged squarato complex 3. The magnetic properties are discussed in relation to other related compounds and the structural data. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI