Bis­(piperidinium) trans-di­chloro­bis(3,5-di­nitro­benzoato)­zincate(II)

✍ Scribed by Miminoshvili, Elguja B. ;Sobolev, Alexandre N. ;Miminoshvili, Ketevan E. ;Sakvarelidze, Tamara N.

• Publisher: International Union of Crystallography
• Year: 2004
• Tongue: English
• Weight: 210 KB
• Volume: 60
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s160053680400337x

✦ Synopsis

Complexes of 3d transition metal chlorides with dinitrobenzoic acids (DNBH) and secondary amines have been synthesized in order to model processes of chemisorption of organic salts by metal surfaces. A series of compounds of composition (AmH) 2 [MCl 2 (DNB) 2 ] (where M = Zn II , Cu II ; AmH + is the cation of piperidine PipH + = C 5 H 10 NH 2 + or diethylamine DaH + = C 4 H 10 NH 2 + ) have been prepared, the structure of the piperidinium salt of the Zn/3,5-DNB complex anion being authenticated by X-ray crystallography. In the title compound, (C 5 H 12 N) 2 [ZnCl 2 (C 7 H 3 N 2 O 6 ) 2 ], the Zn atom is four-coordinated. The DNB ligand behaves as a monodentate ligand via an O atom of the carboxylate group, the other carboxylate O atom being hydrogen bonded to one of the ammonium H atoms. The other ammonium H atom of the two cations links to the coordinated chlorides, one within the complex and the other across an inversion center, so forming a dimer.