3,6‐Dichloro‐4‐[2‐(4‐thiamorpholino)ethanesulfanyl]pyridazine and 3,6‐bis(pyrazol‐1‐yl)‐4‐[2‐(4‐thiamorpholino)ethanesulfanyl]pyridazine |
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Authors: | Alexander J. Blake Peter Hubberstey Alexander D. Mackrell Claire Wilson |
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Abstract: | The trans–trans conformations adopted by the derivatized bis(bidentate) chelating N4‐donor ligand 3,6‐bis(pyrazol‐1‐yl)‐4‐[2‐(4‐thiamorpholino)ethanesulfanyl]pyridazine, C16H19N7S2, and an intermediate in its formation, 3,6‐dichloro‐4‐[2‐(4‐thiamorpholino)ethanesulfanyl]pyridazine, C10H13Cl2N3S2, contrast with the cis–cis conformation found previously for 3,6‐bis(thiophen‐2‐yl)pyridazine [Ackers, Blake, Hill & Hubberstey (2002). Acta Cryst. C 58 , o640–o641], which places all four heteroatoms on the same side of the molecule. |
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