TY - JOUR
T1 - Capture of aromatic carboxylate anion through second sphere coordination
T2 - Topological complementarity of [cis-Co(en)2(N3)2]+ and C7 H3 ClNO4- ions
AU - Sharma, Rajni
AU - Sharma, Raj Pal
AU - Venugopalan, Paloth
AU - Quirós, Miguel
AU - Salas, Juan M.
AU - Yu, J.
AU - Du, Y.
PY - 2008/8/14
Y1 - 2008/8/14
N2 - [cis-Co(en)2(N3)2]C7H3ClNO4·1.25H2O (Cocnb) was synthesised and detailed packing analyses were undertaken to delineate the topological complementarity of [cis-Co(en)2(N3)2]+ and a 2-chloro-4-nitro benzoate anion (cnb) for second sphere coordination in the crystal lattice. The complex was completely characterised by elemental analyses, spectroscopic studies (IR, UV/visible, 1H and 13C NMR). The compound crystallizes in the monoclinic (space group C2/c) with a = 21.9843(18), b = 8.7959(7), c = 23.0121(18) Å, β = 116.426(1)°, V = 3984.9(6) Å3, and Z = 8. In the crystal lattice, discrete ions of [cis-Co(en)2(N3)2]+ and cnb are arranged in ⋯A-B-A-B⋯ pattern (in both a and c directions of the lattice) forming columns of anions and cations. The anionic columns are π stacked and are involved in extensive hydrogen bonding interaction. It appears that the topological feature of [cis-Co(en)2(N3)2]+ is conducive for generating second sphere interactions with aromatic carboxylates. This strategy may be used as a viable method for the capture of aromatic carboxylate anions.
AB - [cis-Co(en)2(N3)2]C7H3ClNO4·1.25H2O (Cocnb) was synthesised and detailed packing analyses were undertaken to delineate the topological complementarity of [cis-Co(en)2(N3)2]+ and a 2-chloro-4-nitro benzoate anion (cnb) for second sphere coordination in the crystal lattice. The complex was completely characterised by elemental analyses, spectroscopic studies (IR, UV/visible, 1H and 13C NMR). The compound crystallizes in the monoclinic (space group C2/c) with a = 21.9843(18), b = 8.7959(7), c = 23.0121(18) Å, β = 116.426(1)°, V = 3984.9(6) Å3, and Z = 8. In the crystal lattice, discrete ions of [cis-Co(en)2(N3)2]+ and cnb are arranged in ⋯A-B-A-B⋯ pattern (in both a and c directions of the lattice) forming columns of anions and cations. The anionic columns are π stacked and are involved in extensive hydrogen bonding interaction. It appears that the topological feature of [cis-Co(en)2(N3)2]+ is conducive for generating second sphere interactions with aromatic carboxylates. This strategy may be used as a viable method for the capture of aromatic carboxylate anions.
KW - 2-Chloro-4-nitrobenzoate
KW - Cobalt(III)
KW - Coordination chemistry
KW - Second sphere coordination
KW - Supramolecular chemistry
KW - X-ray crystallography
UR - http://www.scopus.com/inward/record.url?scp=46749090098&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2007.10.010
DO - 10.1016/j.molstruc.2007.10.010
M3 - Article
AN - SCOPUS:46749090098
SN - 0022-2860
VL - 885
SP - 7
EP - 14
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
IS - 1-3
ER -