A Perfectly Square-Planar Tetracoordinated Oxygen in a Tetracopper Cluster-Based Coordination Polymer

Zhang, Xian‐Ming; Lv, Jin; Ji, Fang; Wu, Hai‐Shun; Jiao, Haijun; Schleyer, Paul von Ragué

doi:10.1021/ja201525a

Cited by 65 publications

(32 citation statements)

References 35 publications

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“…2004 diskutierten Li und Mitarbeiter die Hydrometallkomplexe D 4 h ‐Cu 4 H 4 O 2+ ( 21 d ) und D 4 h ‐Ni 4 H 4 O 2+ ( 21 h ),58 und ebenso D 5 h ‐Cu 5 H 5 O 2+ ( 29 d ) 68. 2011 beobachteten Zhang und Mitarbeiter122 experimentell ein perfekt quadratisch‐planar tetrakoordiniertes Sauerstoffatom ( 48 ) in einem Tetrakupfercluster‐basierten Koordinationspolymer (Abbildung 48).…”

Section: Andere Planar Tetrakoordinierte (Oder Hyperkoordinierte) unclassified

Vier Jahrzehnte Chemie der planar hyperkoordinierten Verbindungen

et al. 2015

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Planar vierfach koordinierter Kohlenstoff (ptC) wurde seit 1874 für über ein Jahrhundert als unplausibel angesehen. Danach konnten jedoch Beispiele rechnerisch vorhergesagt und experimentell realisiert werden. Sowohl elektronische als auch mechanische Effekte (z. B. in kleinen Ringen und Käfigen) stabilisieren diese ungewöhnlichen Bindungsanordnungen. Konzepte basierend auf den Bindungsmotiven des planaren Methans/planaren Methandikations können erweitert werden, um planar hyperkoordinierte Strukturen anderer chemischer Elemente zu entwerfen. Zahlreiche Konfigurationen von verschiedenen Zentralatomen (Haupt‐ und Übergangsmetallelementen) in einer Ebene mit Koordinationszahlen von bis zu zehn werden diskutiert. Die Evolution von solchen planaren Konfigurationen aus kleinen Molekülen zu Clustern, nanoskopischen Spezies bis hin zu Festkörpern wird aufgezeigt. Für einige experimentell hergestellte planare Materialien wurden außergewöhnliche elektrische und magnetische Eigenschaften nachgewiesen.

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Section: Andere Planar Tetrakoordinierte (Oder Hyperkoordinierte) unclassified

Vier Jahrzehnte Chemie der planar hyperkoordinierten Verbindungen

et al. 2015

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“…Compound 1 exhibited two EPR signals at g = 4.22 and g = 2.19 ( figure 6). Generally, isoelectronic ions in similar symmetry environments have similar g factors, and metal ions with a 3d 7 configuration, such as Fe(I), Co(II), and Cu(IV) [41]. Hence, the two EPR signals in 1 may be ascribed to the presence of Co(II) with 3d 7 configuration.…”

Section: Epr Spectroscopymentioning

confidence: 99%

Ultrasound and solvent-induced reversible chromism in a luminescent chalcogenidostannate

Ren

Ning

Hou

2014

Journal of Coordination Chemistry

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Solvothermal treatment of a mixture of Se, SnC1 2 , CoC1 2 , and dien (dien = diethylenetriamine) generated yellow crystals of [Co(dien) 2 ] 2 Sn 2 Se 6 (1), which could transform into black 2 with the same formula via rinsing with water. In the presence of water, ultrasound irradiation of black 2 went back to yellow 1. The reversible ultrasound and solvent-induced chromism has never been observed before. Compared with yellow 1, hyperchromism was apparent around 550 nm in the visible absorption spectrum of 2. The fluorescent properties for 1 and 2 were investigated and the mechanisms were validated by density functional theory calculations on the experimental geometries. In addition, electron paramagnetic resonance spectra of yellow 1 are similar to chromic black 2 in the signal at g = 4.22 and g = 2.19; the signal at g = 2.19 of 2 shows a sharp increase.

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“…Metal-azolate frameworks (MAFs) (Zhang et al, 2012) based on imidazole (Him) (Wang et al, 2008;Tian et al, 2007), pyrazole (Hpz) (Salles et al, 2010), 1,2,4-triazole (Hta) (Zhang & Chen, 2008;Yang et al, 2007Yang et al, , 2009 and tetrazole (Htta) ligands (Zhao et al, 2008;Panda et al, 2011;Cui et al, 2012;Dang et al, 2012;Zhang et al, 2011) have attracted much attention due to their intriguing molecular topologies and potential applications in sensors (Kreno et al, 2012), luminescence (Liu et al, 2012) and magnetism (Dechambenoit & Long, 2011). Among these MAFs, the five-membered heterocyclic tetrazole ligand is suitable for the design and preparation of various MAFs, because the tetrazole ring displays strong -donor and weak -acceptor properties, and can adopt nine coordination modes (i.e.…”

Section: Introductionmentioning

confidence: 99%

A novel tetrazolate- and cyanide-bridged three-dimensional heterometallic coordination polymer: crystal structure, thermal stability and magnetic properties

Qin

Sun

2017

Acta Crystallogr C

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By using environmentally friendly K[Co(CN)] as a cyanide source, the solvothermal reaction of CuCl and tetrazole (Htta) led to a novel tetrazolate- and cyanide-bridged three-dimensional heterometallic Cu-Co complex, namely poly[[hexa-μ-cyanido-κC:N-pentakis(μ-tetrazolato-κN:N:N)cobalt(III)tetracopper(II)] monohydrate], {[CoCu(CHN)(CN)]·HO}, (I). The crystal structure analysis reveals that it is the first example of a (6,8,8)-connected three-dimensional framework with a unique topology, constructed from anionic [Co(CN)] and cationic [(Cu1)(tta)] and [(Cu2Cu3)(tta)] units through μ-cyanide and μ-tetrazolate linkers. The compound was further characterized by thermal analysis, vibrational spectroscopy (FT-IR), scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM-EDS) and magnetic measurements. The magnetic investigation indicates that the complex exhibits antiferromagnetic coupling between adjacent Cu cations.

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A Perfectly Square-Planar Tetracoordinated Oxygen in a Tetracopper Cluster-Based Coordination Polymer

Cited by 65 publications

References 35 publications

Vier Jahrzehnte Chemie der planar hyperkoordinierten Verbindungen

Vier Jahrzehnte Chemie der planar hyperkoordinierten Verbindungen

Ultrasound and solvent-induced reversible chromism in a luminescent chalcogenidostannate

A novel tetrazolate- and cyanide-bridged three-dimensional heterometallic coordination polymer: crystal structure, thermal stability and magnetic properties

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