Tris(2,2'-bioxazoline-kappa2N,N')copper(II) diperchlorate and tris(2,2'-bioxazoline-kappa2N,N')nickel(II) diperchlorate.
In the two isomorphous title compounds, viz. tris[2,2'-bi(4,5-dihydro-1,3-oxazole)-kappa(2)N,N']copper(II) diperchlorate, [Cu(C6H8N2O2)3](ClO4)2, (I), and tris[2,2'-bi(4,5-dihydro-1,3-oxazole)-kappa2N,N']nickel(II) diperchlorate, [Ni(C6H8N2O2)3](ClO4)2, (II), the MII ions each have a distorted octahedral coordination geometry formed via six N atoms from three 2,2'-bioxazoline ligands. For each ligand, the two five-membered rings are nearly coplanar. It is noteworthy that the Jahn-Teller effect is stronger in (I) than in (II). The three-dimensional supramolecular structures of (I) and (II) are formed via weak hydrogen-bonding interactions between O atoms from perchlorate anions and H atoms from 2,2'-bioxazoline ligands.
Lü
Zheng Liang
ZL
Centre for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
Liu
Zhi Liang
ZL
Zhang
De Qing
DQ