Two new coordination polymers involving Mn(II), Co(II), dicyanamide anion and the nitrogen ligand 5,5′-dimethyl-2,2′-dipyridine: Crystal structures and magnetic properties

Lopes, Lívia B.; Corrêa, Charlane C.; Guedes, Guilherme P.; Vaz, Maria G. F.; Diniz, Renata; Machado, Flávia C.

doi:10.1016/j.poly.2012.10.032

Cited by 23 publications

(6 citation statements)

References 27 publications

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“…All Ag1–N distances are of comparable length (see Figure 12) and the distance between two adjacent C 6 ring planes is 7.042 Å. The intra‐chain silver–silver distances are shorter than those in 2 and 3 , measuring 7.858 Å for the Ag1–Ag1′ distance and 7.857 Å for Ag2–Ag2′ distance, values that are in agreement with the metal–metal distances reported in other chain coordination polymers featuring dca bridges 25–27…”

Section: Resultssupporting

confidence: 85%

“…The dicyanamide ligands in 2 adopt a μ 1,5 ‐coordination mode (see Figure 10), as in solid Ag(dca) 20. A comparable bonding mode has previously been found in other coordination polymers in which the dca ligands connect various metals, such as Zn II ,25 Cu II[26] and Mn II or Co II 27. The silver cations are additionally bound to (ttmgb) 2+ dicationic units in such a way that the (ttmgb) 2+ units are stacked with a co‐planar arrangement of their C 6 rings and connect two {Ag(dca)} n chains.…”

Section: Resultssupporting

confidence: 69%

“…The distance between the C 6 ring planes of two adjacent (ttmgb) 2+ units measures 7.670 Å. The intra‐chain Ag–Ag distance between adjacent Ag atoms is 8.089 Å, which is relatively long, but not unusual in comparison with other metal–metal distances in dca‐containing coordination polymers 25–27. The packing of the chains is visualized in Figure 10 (c).…”

Section: Resultsmentioning

confidence: 92%

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Redox Reactions Between Guanidine Electron Donors and Silver Dicyanamide: Synthesis of C,N Material Precursors and Coordination Polymers

et al. 2013

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Reaction of the organic electron donors ttmgb [1,2,4,5‐tetrakis(tetramethylguanidinyl)benzene] and tdmegb [1,2,4,5‐tetrakis(N,N′‐dimethylethyleneguanidinyl)benzene] with two equivalents of silver dicyanamide, Ag(dca), yielded the two salts (ttmgb)(dca)2 (1a) and (tdmegb)(dca)2 (1b). Their relatively high N/C ratios motivated an analysis of their suitability as precursors to C,N materials. The compounds melt at around 200 °C and decompose at 220 (1a) and 245 °C (1b). Reactions of the organic electron donors with an excess of Ag(dca) resulted in coupled redox and coordination reactions, leading finally to coordination polymers with different dimensionalities. The oxidized guanidine units in the polymers are connected through Ag–dca–Ag bridges, leading to stacks of co‐planar C6 rings. The resulting cationic networks are neutralized by dca anions or anionic Ag(dca) chains.

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Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 92%

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Redox Reactions Between Guanidine Electron Donors and Silver Dicyanamide: Synthesis of C,N Material Precursors and Coordination Polymers

et al. 2013

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“…Moreover, the use of bipyridine type co-ligands has long been known due to the capacity of these ligands to promote stability and crystallization of coordination complexes and polymers [14]. Up to now, few articles have been published on the use of different di-alkyl-2,2′-bipyridines as ancillary ligands, either in transition metal complexes [15] or coordination polymers [16,17].…”

Section: Introductionmentioning

confidence: 99%

Syntheses and Crystal Structures of Mn(II), Ni(II) and Cu(II) Coordination Compounds Assembled by Maleato and Dimethyl-2,2′-bipyridines

et al. 2018

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Your article is protected by copyright and all rights are held exclusively by Springer Science+Business Media, LLC, part of Springer Nature. This e-offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to selfarchive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".

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“…Compound 1 is isostructural to the [Co(dca) 2 (dmdpy)] n described by us previously. [13] In the present work, we used HFEPR spectroscopy to characterize the magnetic anisotropy of 1.…”

Section: Introductionmentioning

confidence: 99%

Two coordination polymers containing the dicyanamide ligand: Synthesis, crystal structures, and HFEPR studies

Escobar

Corrêa

Guedes

et al. 2016

Inorganica Chimica Acta

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Two new compounds [Ni(dca) 2 (dmdpy)] (1) and [Zn(dca) 2 (dmdpy)] (2), (dca = dicyanamide and dmdpy = 5,5'-dimethyl-2,2'-dipyridine) were synthesized and characterized by single crystal X-ray diffraction, FTIR and thermal analysis. In both compounds, the dmdpy ligand adopts a bidentate chelating coordination mode while dca anions act in a µ 1,5 bridging fashion. In 1, the Ni II centers lie on a distorted octahedral geometry, whereas in 2 the Zn II geometry is distorted square pyramidal. In compounds 1 and 2, dca ligands connect the metal sites giving rise to 2D and 1D coordination polymers, respectively. The magnetic properties of 1 were studied by magnetic susceptibility and high field/frequency electron paramagnetic resonance (HFEPR) measurements.

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Two new coordination polymers involving Mn(II), Co(II), dicyanamide anion and the nitrogen ligand 5,5′-dimethyl-2,2′-dipyridine: Crystal structures and magnetic properties

Cited by 23 publications

References 27 publications

Redox Reactions Between Guanidine Electron Donors and Silver Dicyanamide: Synthesis of C,N Material Precursors and Coordination Polymers

Redox Reactions Between Guanidine Electron Donors and Silver Dicyanamide: Synthesis of C,N Material Precursors and Coordination Polymers

Syntheses and Crystal Structures of Mn(II), Ni(II) and Cu(II) Coordination Compounds Assembled by Maleato and Dimethyl-2,2′-bipyridines

Two coordination polymers containing the dicyanamide ligand: Synthesis, crystal structures, and HFEPR studies

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