Crystal structures of two platinum(II) complexes containing ethyl eugenoxyacetate and 2-aminopyridine

• Published in: Acta crystallographica. Section E, Crystallographic communications Crystallographic communications, 2017-04, Vol.73 (4), p.573-578
• Main Authors: Le Thi Hong, Hai, Nguyen Thu, Thao, Nguyen, Hien, Van Meervelt, Luc
• Format: Article
• Language: English
• Subjects: 2-aminopyridine; crystal structure; eugenol; platinum(II) complexes
• ISSN: 2056-9890; 2056-9890
• DOI: 10.1107/S2056989017004285

In the title complexes, trans -(2-aminopyridine-κ N )dichlorido{4-ethoxycarbonylmethoxy-3-methoxy-1-[(2,3-η)-prop-2-en-1-yl]benzene}platinum(II), [PtCl 2 (C 5 H 6 N 2 )(C 14 H 18 O 4 )], (I), and (2-aminopyridine-κ N )chlorido{5-ethoxycarbonylmethoxy-4-methoxy-1-[(2,3-η)-prop-2-en-1-yl]phenyl-κ C 1 }platinum(II), [Pt(C 14 H 17 O 4 )Cl(C 5 H 6 N 2 )], (II), the central Pt II metal atom displays a distorted square-planar coordination, with the Pt II atom coordinated by the pyridine N atom, the C=C double bond of the eugenol ligand and two Cl atoms for (I) or one Cl atom and a C atom of the phenyl ring for (II). The allyl fragment in (I) is disordered, with population parameters 0.614 (14) and 0.386 (14) for the two positions of the central C atom. The least-squares planes through the two aromatic ring systems make a dihedral angle of 51.10 (13)° for (I) and 78.5 (2)° for (II). Intramolecular N—H...O and N—H...π interactions occur in (I). In (I), inversion dimers formed by C—H...Cl interactions are further linked into chains parallel to the b axis by C—H...O hydrogen bonds. Both aromatic rings are involved in π–π interactions, with centroid-to-centroid distances of 3.508 (3) and 3.791 (3) Å. In (II), inversion dimers form chains parallel to the b axis by C—H...O interactions.