Publikationsdatum:
2011-12-06
Beschreibung:
Three novel 5- R -tetrazolato complexes ( R = Me, Ph, 4-Py), namely [Zn 2 (MeCN 4 ) 4 (DMSO) 2 ] ( 1 ), [Cu 2 (PhCN 4 ) 4 (en) 2 ] · 2DMSO ( 2 ), and [Cu(4-PyCN 4 ) 2 (DMSO) 2 ] · 4DMSO ( 3 ), were isolated as unexpected products under attempts to prepare heterometallic tetrazolates using a direct synthesis strategy in the Cu 0 -ZnO-en-RCN 4 H-DMSO system (en = ethylenediamine). The prepared compounds were characterized by elemental, single-crystal X-ray, and thermal analyses, and IR spectroscopy. Variation of the 5-substituent of the tetrazole ring causes different composition of complexes 1 – 3 and diverse coordination modes of 5- R -tetrazolato ligands. Complex 1 is a 3D coordination polymer due to N1,N4-bridging of 5-methyltetrazolato anions. Complex 2 , with en as a coligand, has a dinuclear structure with two copper atoms linked together by two 5-phenyltetrazolato ligands by tetrazole N2,N3 bridges. Complex 3 represents a 2D coordination polymer, formed due to 5-(4-pyridyl)tetrazolato bridges between adjacent copper atoms (with the tetrazole and pyridine rings nitrogen atoms as coordination centers). DMSO molecules, included in all the compounds, are solvate and/or coordinated ones.
Print ISSN:
0044-2313
Digitale ISSN:
1521-3749
Thema:
Chemie und Pharmazie
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