Syntheses and crystal structures of Cu(II) and Zn(II) complexes of 2,2′-dipyridyl( N-propenyl)amine
Reaction between copper(II)- and zinc(II)-nitrates and 2,2′-dipyridyl( N-propenyl)amine (Prdpa) affords 1:1 complexes M(Prdpa)(NO 3) 2 (M=Cu, 1; M=Zn, 5) for both metal ions and a 1:2 adduct M(Prdpa) 2(NO 3) 2 ( 2) for copper only. In ethanol 1 dissociates to form 2 and copper nitrate. X-ray diffrac...
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Published in | Polyhedron Vol. 20; no. 24; pp. 2935 - 2943 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
OXFORD
Elsevier Ltd
15.11.2001
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Reaction between copper(II)- and zinc(II)-nitrates and 2,2′-dipyridyl(
N-propenyl)amine (Prdpa) affords 1:1 complexes M(Prdpa)(NO
3)
2 (M=Cu,
1; M=Zn,
5) for both metal ions and a 1:2 adduct M(Prdpa)
2(NO
3)
2 (
2) for copper only. In ethanol
1 dissociates to form
2 and copper nitrate. X-ray diffraction studies on
1,
2 and
5, and on the 2,2′-dipyridylamine (Hdpa) analogue of
1, Cu(Hdpa)(NO
3)
2 (
4), are reported. The metal centres exhibit square pyramidal (
1) or distorted octahedral (
2,
4,
5) primary coordination spheres. Bridging nitrate groups linking Cu atoms in
1 and
4 result in CuONOCu chains, which in the case of
4 are extensively cross-linked by N−H⋯ONO
2 H-bonding into 3D-arrays. Intermolecular C−H⋯ONO
2 interactions are apparent in the solid-state structure of
2. The structural effects of replacing the NH atom on Hdpa by a propenyl group in 6-coordinate Cu(II) complexes are assessed.
The coordination chemistry of 2,2′-dipyridyl(
N-propenyl)amine (Prdpa) towards Cu(II) and Zn(II) nitrates has been explored. The structures of two of the resulting 1:1 complexes, M(Prdpa)(NO
3)
2, M=Cu (
1); M=Zn (
5) and one 1:2 adduct, Cu(Prdpa)
2(NO
3)
2 (
2) have been determined. The structural effects of replacing the NH atom in 2,2′-dipyridylamine by a propenyl group in 6-coordinate Cu(II) complexes have been assessed. These include the ability of Prdpa to promote intermolecular C−H⋯ONO
2 interactions. |
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ISSN: | 0277-5387 |
DOI: | 10.1016/S0277-5387(01)00877-4 |