Crystal structure and magnetic properties of [C6H4(CH2NH3)2][CuCl3(H2O)]Cl·H2O

✍ Scribed by Salim F. Haddad; Roger D. Willett; Christopher P. Landee

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 133 KB
• Volume: 316
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(01)00392-9

✦ Synopsis

The preparation, crystal structure and magnetic properties of the title compound, (1,3-xylylenediammonium)auqatrichlorocuprate(II) chloride hydrate, have been determined. It is monoclinic, space group P2 1 /c, with a=12.711(2), b= 6.122(1), c=19.175(5) A , and i =96.72(2)°with V= 1481.6(5) A , 3 for Z= 4. The structure contains several architectural features of significance. The compound contains planar CuCl 3 (H 2 O) -anions with Cu Cl distances ranging from 2.2590(8) to 2.3239(6) A , and a Cu O distance of 1.991(2) A , . The anions form stacks through the formation of long (3.06 A , , average) semi-coordinate Cu•••Cl bonds. Hydrogen bonding involving the coordinated and lattice water molecules ties the stacks together into two-dimensional arrays. The diammonium cations form organic layers interleaved between the inorganic arrays. The cations are anchored to the inorganic arrays by an efficient NH 3 •••Cl hydrogen-bonding network. Magnetic measurements indicate that weak antiferromagnetic interactions (2J/k= -3.06 K) exist in the system, which is attributed to exchange coupling mediated by the semi-coordinate Cu•••Cl bonds.