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Chiral metal complexes 35. Unusual terdentate behaviour in the crystal structure of chloro[N,N′-di(2-picolyl)-N-(2-pyridinecarboxamide)-1,2-diaminocyclohexane]palladium(II) perchlorate hemihydrate by Ronald R. Fenton; Frederick S. Stephens; Robert S. Vagg; Peter A. Williams is a Chemistry article available to read on EtoBox.

What is Chiral metal complexes 35. Unusual terdentate behaviour in the crystal structure of chloro[N,N′-di(2-picolyl)-N-(2-pyridinecarboxamide)-1,2-diaminocyclohexane]palladium(II) perchlorate hemihydrate about?

Au improved method of synthesis for the tetradentate ligand rut-N,N'-di(2-picolyl)-1,2-diaminocyclohexane, (rut-picchxn), is described. The controlled reaction of 2-pyridinecarboxylic acid with this compound results in the potentially pentadentate N, ligand N,N'-di(2-picolyI)-N-(2-pyridinecarboxamide)-1,2-diaminocyclohexane, (rut-picchxnam). A palIadium(I1) complex of this Iigand was isolated and its crystal structure determined by X-ray diffraction. [Pd(picchxnam)C1]CI0,.~H20, Cr4H2aNS0&12Pd, crystallises in the monoclinic space group Pn (non-standard No. 7) with a = 12.006(2), b=8.207(2), c = 13.477(2) A, /3 = 100.80(l)", 2 = 2. The structure was refined to R = 0.039 by least-squares techniques for 2066 reflections. The ligand coordinates as a terdentate through the two picolyl pyridine-N atoms and the secondary amine-N atom. This results in a five-membered chelate ring and an unusual eightmembered ring which contains the tertiary amide nitrogen atom. The pyridinecarboxamide group does not coordinate, but is non-planar and is orientated away from the PdN$ZI square-plane. The Pd-Cl, Pd-N(amine) and Pd-N(pyridyl) distances are 2.309(3), 2.079(7), 2.091(8) and 2.029(8) A, respective

Who reads Chiral metal complexes 35. Unusual terdentate behaviour in the crystal structure of chloro[N,N′-di(2-picolyl)-N-(2-pyridinecarboxamide)-1,2-diaminocyclohexane]palladium(II) perchlorate hemihydrate?

Author

Ronald R. Fenton; Frederick S. Stephens; Robert S. Vagg; Peter A. Williams

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

1991

Language

EN

Field

Chemistry (Physical Sciences)