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Crystallization experiments with the dinuclear chelate ring complex di‐μ‐chlorido‐bis[(η 2 ‐2‐allyl‐4‐methoxy‐5‐{[(propan‐2‐yloxy)carbonyl]methoxy}phenyl‐κ C 1 )platinum(II)]
Author(s) -
Nguyen Thi Thanh Chi,
Pham Van Thong,
Le Thi Hong Hai,
Van Meervelt Luc
Publication year - 2016
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229616015151
Subject(s) - chemistry , platinum , diethyl ether , medicinal chemistry , acetonitrile , dimethylformamide , tetrahydrofuran , ligand (biochemistry) , methylene , ether , stereochemistry , solvent , organic chemistry , catalysis , biochemistry , receptor
Crystallization experiments with the dinuclear chelate ring complex di‐μ‐chlorido‐bis[(η 2 ‐2‐allyl‐4‐methoxy‐5‐{[(propan‐2‐yloxy)carbonyl]methoxy}phenyl‐κ C 1 )platinum(II)], [Pt 2 (C 15 H 19 O 4 ) 2 Cl 2 ], containing a derivative of the natural compound eugenol as ligand, have been performed. Using five different sets of crystallization conditions resulted in four different complexes which can be further used as starting compounds for the synthesis of Pt complexes with promising anticancer activities. In the case of vapour diffusion with the binary chloroform–diethyl ether or methylene chloride–diethyl ether systems, no change of the molecular structure was observed. Using evaporation from acetonitrile (at room temperature), dimethylformamide (DMF, at 313 K) or dimethyl sulfoxide (DMSO, at 313 K), however, resulted in the displacement of a chloride ligand by the solvent, giving, respectively, the mononuclear complexes (acetonitrile‐κ N )(η 2 ‐2‐allyl‐4‐methoxy‐5‐{[(propan‐2‐yloxy)carbonyl]methoxy}phenyl‐κ C 1 )chloridoplatinum(II) monohydrate, [Pt(C 15 H 19 O 4 )Cl(CH 3 CN)]·H 2 O, (η 2 ‐2‐allyl‐4‐methoxy‐5‐{[(propan‐2‐yloxy)carbonyl]methoxy}phenyl‐κ C 1 )chlorido(dimethylformamide‐κ O )platinum(II), [Pt(C 15 H 19 O 4 )Cl(C 2 H 7 NO)], and (η 2 ‐2‐allyl‐4‐methoxy‐5‐{[(propan‐2‐yloxy)carbonyl]methoxy}phenyl‐κ C 1 )chlorido(dimethyl sulfoxide‐κ S )platinum(II), determined as the analogue {η 2 ‐2‐allyl‐4‐methoxy‐5‐[(ethoxycarbonyl)methoxy]phenyl‐κ C 1 }chlorido(dimethyl sulfoxide‐κ S )platinum(II), [Pt(C 14 H 17 O 4 )Cl(C 2 H 6 OS)]. The crystal structures confirm that acetonitrile interacts with the Pt II atom via its N atom, while for DMSO, the S atom is the coordinating atom. For the replacement, the longest of the two Pt—Cl bonds is cleaved, leading to a cis position of the solvent ligand with respect to the allyl group. The crystal packing of the complexes is characterized by dimer formation via C—H…O and C—H…π interactions, but no π–π interactions are observed despite the presence of the aromatic ring.

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