3D hydrogen-bonded network built from copper(II) complexes of 1,3-propanediamine

Journal of the Brazilian Chemical Society

Mauro, Antonio E.¹  Martins, Fabiane R.¹  Ananias, Sandra R.¹  Netto, Adelino V. G.¹  Santos, Regina H. A.¹  Universidade de São Paulo, São Carlos, Brazil¹  Andrade, Fabiana C.¹  Legendre, Alexandre O.¹  Ferreira, Janaina G.¹  Universidade Estadual Paulista, Araraquara, Brazil¹ 

关键词: copper(II) complexes;    hydrogen bonds;    supramolecular chemistry;   

DOI  :  10.1590/S0103-50532006000800029

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

The reaction of Cu(NO3)2.3H2O with 1,3-propanediamine (pn), in the presence of NaN3, afforded a 1:1 co-crystal formed by [Cu(NO3)2(pn)2] and [Cu(N3)(NO3)(pn)2 ] (1 and 2), which were characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. In both compounds, the copper(II) centers are in a distorted octahedral environment, formed by four N atoms of two bidentate pn ligands in the basal plane, whereas the axial bonds are formed by two O atoms from the nitrate ligands in 1 and one O atom from the nitrate ligand and one N atom from the azide ion in 2. The asymmetric unit of the crystal consists of two crystallographically independent 1 and 2 complexes, which are held together in a 3D network by a series of N–H···O and N–H···N hydrogen bonds, as well C–H···O interactions. New supramolecular synthons are identified by the occurrence of two geometrically distinct molecular recognition patterns involving the NO3– ion and amino groups from pn ligands.

【 授权许可】

Unknown