Dibromido[<i>N</i>-propyl-<i>N</i>′-(2-pyridylmethylidene)ethane-1,2-diamine]zinc(II)

Zhu, Xue-Wen; Yang, Xu-Zhao

doi:10.1107/s1600536808023660

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…The Zn atom is five-coordinated by the three N-donor atoms of the Schiff base ligand, and by two Br atoms in a distorted square-pyramidal geometry. All the coordinate bond lengths are within normal values and are comparable to those in similar zinc(II) complexes with Schiff bases (Wang, 2010;Zhu et al, 2007;Li & Zhang, 2004;Zhu & Yang, 2008). As expected, the morpholine ring adopts a chair conformation.…”

Section: Crystal Datasupporting

confidence: 81%

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Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)

Wang

2011

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 298 K; mean (C-C) = 0.013 Å; R factor = 0.065; wR factor = 0.177; data-to-parameter ratio = 18.7.In the title complex, [ZnBr 2 (C 13 H 19 N 3 O)], the Zn II atom is five-coordinated by the three N-donor atoms of the Schiff base ligand and by two Br atoms in a distorted square-pyramidal geometry. The morpholine ring adopts a chair conformation. Related literature

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Section: Crystal Datasupporting

confidence: 81%

“…For background to Schiff base complexes, see: Dhar & Chakravarty (2003); Das et al (2006); Nayak et al (2006). For the crystal structures of similar Schiff base-zinc(II) complexes, see: Wang (2010); Zhu et al (2007); Li & Zhang (2004); Zhu & Yang (2008).…”

Section: Related Literaturementioning

confidence: 99%

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)

Wang

2011

Acta Cryst E

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Group 12 metal complexes of (2-piperazine-1-yl-ethyl)-pyridin-2-yl-methylene-amine: rare participation of terminal piperazine N in coordination leads to structural diversity

et al. 2017

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By using a potential tridentate ligand L ((2-piperazine-1-yl-ethyl)-pyridin-2-yl-methylene-amine), a series of group 12 metal complexes namely, [ZnLHCl][ZnLCl]·2HO (1), [CdL(SCN)(CHOH)] (2), and [Hg(l-pyCO)Cl] (3), were synthesized and structurally characterized. In all the complexes the piperazine nitrogen of the ligand takes part in coordination and leads to the complexes of group 12 metal ions having structural diversity. The X-ray diffraction analysis of complex 1 indicates for one Zn(ii) ion a geometry in between trigonal bipyramidal/square pyramidal and for the second a distorted tetrahedral sphere. In the polymeric complex 2 the Cd(ii) ion shows a distorted octahedral environment, while in the mononuclear complex 3, where Hg(ii) exhibits a square-pyramidal geometry, an unexpected condensation between the uncoordinated NH piperazine fragment with 2-pyridinecarboxaldehyde was detected. The M-N bond lengths in all the complexes are in accordance with the metal ionic radius. Continuous shape measures through a DFT approach provide the coordination environment around each metal centre that is comparable with the experimental observations. We have also investigated the importance of hydrogen bonding of methanol in the generation of the polymeric Cd complex 2 along with the rearrangement of the tridentate ligand to generate an octahedral complex. The photoluminescence properties of the complexes as well as of the ligand were investigated in solution at ambient temperature. The low quantum yield of the ligand was ascribed due to a very fast photoinduced electron transfer (PET) from the nitrogen lone pair to the conjugated pyridine moiety. Complexation prevents the electron transfer, and consequently an increase in quantum yield was observed in the complexes. Among the three complexes the highest photoluminescence was exhibited by a Zn complex, being lower in Cd and Hg complexes as a consequence of the heavy atom perturbation effect.

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Dichlorido{2-[3-(dimethylammonio)propyliminomethyl]phenolato}zinc(II) hemihydrate

Zhu¹

2008

Acta Cryst E

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The title complex, [ZnCl2(C12H18N2O)]·0.5H2O, is a mononuclear zinc(II) compound derived from the zwitterionic form of the Schiff base 2-[3-(dimethylamino)propyliminomethyl]phenol. The ZnII atom is four-coordinated by the imine N and the phenolate O atoms of the Schiff base ligand, and by two chloride ions, in a distorted tetrahedral coordination geometry. The dimethylammonio group is disordered over two positions with site occupancies of 0.51 (3) and 0.49 (3). In the asymmetric unit, there is also a disordered water molecule with a partial occupancy of 0.5. In the crystal structure, the water molecules are linked to the Schiff base complex molecules through intermolecular N—H⋯O hydrogen bonds. Molecules are further linked through additional intermolecular N—H⋯O hydrogen bonds, forming chains running along the b axis.

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Dibromido[N-propyl-N′-(2-pyridylmethylidene)ethane-1,2-diamine]zinc(II)

Cited by 4 publications

References 13 publications

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)

Group 12 metal complexes of (2-piperazine-1-yl-ethyl)-pyridin-2-yl-methylene-amine: rare participation of terminal piperazine N in coordination leads to structural diversity

Dichlorido{2-[3-(dimethylammonio)propyliminomethyl]phenolato}zinc(II) hemihydrate

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Dibromido[N-propyl-N′-(2-pyridylmethylidene)ethane-1,2-diamine]zinc(II)

Cited by 4 publications

References 13 publications

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ3N,N′,N′′}zinc(II)

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ3N,N′,N′′}zinc(II)

Group 12 metal complexes of (2-piperazine-1-yl-ethyl)-pyridin-2-yl-methylene-amine: rare participation of terminal piperazine N in coordination leads to structural diversity

Dichlorido{2-[3-(dimethylammonio)propyliminomethyl]phenolato}zinc(II) hemihydrate

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Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)

Dibromido{2-morpholino-N-[1-(2-pyridyl)ethylidene]ethanamine-κ³N,N′,N′′}zinc(II)