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- W2077765554 abstract "Synthesis of the new tridentate ligand, 2,6-bis(pyrazol-1-ylmethyl)pyridine (6) and its chiral derivatives (11–15) are described. The preparations of complexes of these ligands with several divalent transition metal ions (Fe2+, Ni2+, Cu2+, Ru2+, Pd2+) are reported. X-ray crystal structures have been determined for the [Ni(6)2](ClO4)216 and [Cu(13)(NCS)2]17 complexes. The salt 16 crystallises in the orthorhombic space group P21212 with a = 10.125(1), b = 17.657(4), c = 8.579(2) Å and Z = 2. The structure was refined to a conventional R factor of 3.9% and shows the nickel atom to lie on a crystallographic two-fold rotation axis in a ‘symmetrical’ octahedral environment. The complex 17 crystallises in the orthorhombic space group P212121 with a = 15.795(3), b = 20.433(3), c = 9.618(1) Å and Z = 4. The structure was refined to R = 4.7% and shows the bonding geometry at the five-coordinate copper atom to be intermediate between square pyramidal and trigonal bipyramidal. In both structures the six-membered chelate rings exist in boat conformations." @default.
- W2077765554 created "2016-06-24" @default.
- W2077765554 creator A5043777316 @default.
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- W2077765554 date "1987-07-01" @default.
- W2077765554 modified "2023-09-27" @default.
- W2077765554 title "Chiral heterocyclic ligands. Part IV. Synthesis and metal complexes of 2,6-Bis(pyrazol-1-ylmethyl)pyridine and chiral derivatives" @default.
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- W2077765554 doi "https://doi.org/10.1016/s0020-1693(00)90431-6" @default.
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