Download copper(ii) complexes with n-arylalkyliminodiacetamide

25th Croatian meeting of chemists and chemical engineers, Poreč, 2017.
COPPER(II) COMPLEXES WITH N-ARYLALKYLIMINODIACETAMIDE LIGANDS
BAKROVI(II) KOMPLEKSI S N-ARILALKILIMINODIACETAMIDNIM LIGANDIMA
Zora Popović, Neven Smrečki, Vladimir Stilinović, Ozren Jović, Boris-Marko Kukovec
Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb,
Croatia
E-mail: [email protected]
The amide linkage is the most fundamental chemical bond in all proteins [1]. The
binding of metal ions by amides, peptides and proteins is of great interest because of the
importance of metal ions in biological systems [2]. Beside their obvious biological
significance, amide ligands have many other valuable properties and many of them already
found their practical application. They are used as pharmacological agents owing to their
relatively good solubility and low toxicity. Amides also show potential for metal ion
recognition. Furthermore, the amide moiety provides various possibilities of hydrogen
bonding motifs which can be used to control the self-assembly processes between metal
complexes in supramolecular coordination chemistry [3,4]. Recently, we discovered
interesting supramolecular architectures in the structures of Cu(II) and Ni(II) complexes with
N-arylalkyliminodiacetamides as hydrogen bond donors and nitrate ions as hydrogen bond
acceptors [5,6]. In order to obtain similar architectures with other oxo-ions such as
perchlorate ions (same charge, different symmetry) we synthesized a few novel copper
complexes with N-arylalkyl derivatives of iminodiacetamide, namely [Cu(Bnimda)2](ClO4)2
(1), [Cu(Peimda)2](ClO4)2 (2) and [Cu(Ppimda)2](ClO4)2∙2H2O (3) (Bnimda, Peimda, Ppimda; Bn
= benzyl, Pe = 2-phenylethyl; Pp = 3-phenylprop-1-yl).
Fig. 1. Crystal packing in 1. a) Hydrogen bonded chains along the crystallographic a axis viewed along the
crystallographic b axis; b) Interconnection of chains into a 3D structure viewed along the crystallographic b axis.
References
[1] J.M. Berg, J.L. Tymoczko, L. Stryer, Biochemistry, 5th ed., W.H. Freeman and Co., New York, 2002.
[2] W. Kaim, B. Schwederski, Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life,
Wiley, Chichester, 1994.
[3] C.B. Aakeröy, A.M. Beatty, Chem. Commun. (1998) 1067–1068.
[4] J. M. Lehn, Supramolecular chemistry – Concepts and perspectives, VCH, Weinheim, 1995.
[5] N. Smrečki, B.-M. Kukovec, M. Đaković, Z. Popović, Polyhedron 93 (2015) 106-117.
[6] N. Smrečki, V. Stilinović, M. Merkaš, A. Lučić, B.-M. Kukovec, Z. Popović, Aust. J. Chem. 69 (2016)
896-904.