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Crystal structure, shape analysis and bioactivity of new Li I , Na I and Mg II complexes with 1,10‐phenanthroline and 2‐(3,4‐dichlorophenyl)acetic acid
Author(s) -
Shah Syed Raza,
Shah Zarbad,
Ullah Najeeb,
Hussain Javid,
Al-Harrasi Rashid,
Khan Ajmal,
Rawson Jeremy M.,
Al-Harrasi Ahmed,
Anwar Muhammad U.
Publication year - 2019
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/s2053229619001396
Subject(s) - chemistry , denticity , deprotonation , phenanthroline , medicinal chemistry , crystal structure , magnesium , acetic acid , sodium , stereochemistry , chelation , crystallography , ion , inorganic chemistry , organic chemistry , biochemistry
Reactions of 1,10‐phenanthroline (phen) and 2‐(3,4‐dichlorophenyl)acetic acid (dcaH) with M n (CO 3 ) ( M = Li I , Na I and Mg II ; n = 1 and 2) in MeOH yield the mononuclear lithium complex aqua[2‐(3,4‐dichlorophenyl)acetato‐κ O ](1,10‐phenanthroline‐κ 2 N , N ′)lithium(I), [Li(C 8 H 5 Cl 2 O 2 )(C 12 H 8 N 2 )(H 2 O)] or [Li(dca)(phen)(H 2 O)] ( 1 ), the dinuclear sodium complex di‐μ‐aqua‐bis{[2‐(3,4‐dichlorophenyl)acetato‐κ O ](1,10‐phenanthroline‐κ 2 N , N ′)sodium(I)}, [Na 2 (C 8 H 5 Cl 2 O 2 ) 2 (C 12 H 8 N 2 ) 2 (H 2 O) 2 ] or [Na 2 (dca) 2 (phen) 2 (H 2 O) 2 ] ( 2 ), and the one‐dimensional chain magnesium complex catena ‐poly[[[diaqua(1,10‐phenanthroline‐κ 2 N , N ′)magnesium]‐μ‐2‐(3,4‐dichlorophenyl)acetato‐κ 2 O : O ′] 2‐(3,4‐dichlorophenyl)acetate monohydrate], {[Mg(C 8 H 5 Cl 2 O 2 )(C 12 H 8 N 2 )(H 2 O) 2 ](C 8 H 5 Cl 2 O 2 )·H 2 O} n or {[Mg(dca)(phen)(H 2 O) 2 ](dca)·H 2 O} n ( 3 ). In these complexes, phen binds via an N , N ′‐chelate pocket, while the deprotonated dca − ligands coordinate either in a monodentate (in 1 and 2 ) or bidentate (in 3 ) fashion. The remaining coordination sites around the metal ions are occupied by water molecules in all three complexes. Complex 1 crystallizes in the triclinic space group P with one molecule in the asymmetric unit. The Li + ion adopts a four‐coordinated distorted seesaw geometry comprising an [N 2 O 2 ] donor set. Complex 2 crystallizes in the triclinic space group P with half a molecule in the asymmetric unit, in which the Na + ion adopts a five‐coordinated distorted spherical square‐pyramidal geometry, with an [N 2 O 3 ] donor set. Complex 3 crystallizes in the orthorhombic space group P 2 1 2 1 2 1 , with one Mg 2+ ion, one phen ligand, two dca − ligands and three water molecules in the asymmetric unit. Both dcaH ligands are deprotonated, however, one dca − anion is not coordinated, whereas the second dca − anion coordinates in a bidentate fashion bridging two Mg 2+ ions, resulting in a one‐dimensional chain structure for 3 . The Mg 2+ ion adopts a distorted octahedral geometry, with an [N 2 O 4 ] donor set. Complexes 1 – 3 were evaluated against urease and α‐glucosidase enzymes for their inhibition potential and were found to be inactive.