Coordination polymers of tetracyanoethylene with metal hexafluoroacetylacetonates: formation and x-ray crystal structures

Bunn, Andrew G.; Carroll, Patrick J.; Wayland, Bradford B.

doi:10.1021/ic00033a031

Cited by 77 publications

(35 citation statements)

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“…Likewise, the central CÀC distance for TCNE 0 is not altered upon bonding to a metal ion or on bridging between two or four metal ions, with average distances of 1.36(1) [32] 1.347(7), [27] and 1.31(1) [28] , respectively, for each set of structures ( Table 1). Note that the former and latter are relatively poor, disordered structures.…”

Section: Bond Lengthsmentioning

confidence: 95%

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Tetracyanoethylene (TCNE): The Characteristic Geometries and Vibrational Absorptions of Its Numerous Structures

2006

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Tetracyanoethylene (TCNE) undergoes numerous reactions and is reported to exist in many structural motifs. Identification of these forms and motifs can be challenging. Nonetheless, the number of nu(CN) absorptions and their frequencies provide insight with respect to the specific forms and charge on the TCNE fragment. Particularly informative is the average of the fundamental nu(CN) bands, as well as the length of the central C-C bond. This Review discusses the assignment of structure and formal charge for TCNE-containing compounds. Scrutiny of previous assignments reveals some discrepancies which are discussed, and provides a basis for further study of TCNE structure-function relationships. Several multimetal complexes with bridging [TCNE](z) units exhibit mixed valency and extensive delocalization. The scarcity of suitable model compounds, especially those with M(d(pi-pi*)) backbonding to the CN groups, have thwarted the detailed description of these valence ambiguous compounds; thus, new well-characterized polynuclear compounds are needed.

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Section: Bond Lengthsmentioning

confidence: 95%

“…While yet to be reported, 1,2-m-TCNE (23) [13] but not with monovalent cations. In addition, TCNE is also a good p-donor ligand and can bond to a metal across the central CÀC bond forming h 2 -TCNE (27). The latter bonding motif is prevalent for later transition metals.…”

Section: A C H T U N G T R E N N U N G [Tcne]mentioning

confidence: 99%

Tetracyanoethylene (TCNE): The Characteristic Geometries and Vibrational Absorptions of Its Numerous Structures

2006

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“…Ebenso ändert sich der Abstand der zentralen C-Atome für TCNE 0 kaum, wenn ein Metallion gebunden oder eine Brücke zwischen zwei oder vier Metallionen gebildet wird; die mittleren Bindungslängen betragen in diesen Fällen 1.36(1), [32] 1.347(7) [27] bzw. 1.31(1) [28] (Tabelle 1).…”

Section: Bindungslängenunclassified

“…Die Korrelation von Strukturdaten mit IR-Spektren ermöglicht es, die Strukturbestimmungen von literaturbekannten TCNE-haltigen Verbindungen noch einmal zu untersuchen. Zuerst betrachten wir die Metallacyclopropane h 2 -TCNE (27 [56,57] und der paramagnetische Komplex [MnCp(CO) 2 (TCNE)]; [60,61] 2À eine BO von 1.33 ergibt (Abbildung 5); dieser Wert stimmt gut mit jenem überein, der sich aus den oben beschriebenen C-C-Abstandsdaten ergibt.…”

Section: Infrarotspektrenunclassified

Tetracyanethylen: die charakteristischen Geometrien und Schwingungsabsorptionen seiner zahlreichen Strukturen

Miller

2006

Angewandte Chemie

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Tetracyanethylen, TCNE, geht zahlreiche chemische Reaktionen ein, und in der Literatur werden für diese Verbindung viele Strukturmotive beschrieben, deren Identifizierung oft schwierig ist. Die Zahl der $\tilde \nu $CN‐Absorptionen und die dazugehörigen Wellenzahlen geben einen Einblick in die jeweilige Struktur und Ladung des TCNE‐Fragments. Besonders die Mittelwerte der Wellenzahlen der fundamentalen νCN‐Schwingungen und die Länge der zentralen C‐C‐Bindung liefern wichtige Informationen. In diesem Aufsatz diskutieren wir die Bestimmung von Struktur und Formalladung von TCNE‐Fragmenten. Wir diskutieren Unstimmigkeiten, die sich bei Überprüfung älterer Strukturzuordnungen ergeben, und liefern eine Grundlage für zukünftige Untersuchungen der Struktur‐Eigenschafts‐Beziehungen von TCNE. Viele Komplexe mit verbrückendem [TCNE]z zeigen gemischte Valenz und ausgeprägte Delokalisierung. Der Mangel an geeigneten Modellverbindungen, besonders solchen mit M‐Rückbindung zu den CN‐Gruppen, hat bisher eine detaillierte Beschreibung dieser gemischtvalenten Verbindungen verhindert. Hierfür werden neue, gut charakterisierte mehrkernige Verbindungen benötigt.

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“…[3][4][5][6] To date, various methods have been developed for synthesizing Copper and its oxide Nanoparticles (CuO NPs), including electrochemical deposition, electrospinning, template processes, hydrothermal reduction and reverse micellar systems. [7][8][9][10][11][12] On the other hand, the microwave-assisted synthesis. 13,14 which is generally quite fast, simple and efficient in energy, has been developed and is widely used in various fields such as molecular sieve preparation, radiopharmaceuticals, the preparation of inorganic complexes and oxide, organic reactions, plasma chemistry, analytical chemistry and catalysis.…”

Section: Introductionmentioning

confidence: 99%

Eco Friendly Synthesis, Spectroscopic Investigation of Copper and Its Oxide Nanoparticles with Excellent Electrical Conductivity

Geetha¹

2017

ATROA

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A facile and rapid route for the synthesis of uniform Nano copper and its oxide (CuO NPs) by a microwave assisted method is demonstrated. The copper and its oxide nanoparticles (CuO NPs) prepared exhibit excellent conductivity, which is comparable with electrospun copper nanofibers. Among the various metal nanoparticles, Copper and its oxide nanoparticles (CuONPs) have attracted considerable attention because copper is one of the most important in modern technology and is readily available. Copper Nanoparticles have been much attractive because it is easily available, cost effective and conducting nature. Copper and its oxide Nanoparticles were synthesized using Copper (II) succinate by microwave conventional method. Copper and its oxide Nanoparticles so obtained were characterized by UV-Visible spectroscopy, Fourier Transform Infrared Spectroscopy and X-Ray diffraction analysis. X-Ray diffraction analysis proved the formation of Copper and its oxide Nanoparticles. SEM and AFM analyses showed the presence of Nanoparticles.

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Coordination polymers of tetracyanoethylene with metal hexafluoroacetylacetonates: formation and x-ray crystal structures

Cited by 77 publications

References 0 publications

Tetracyanoethylene (TCNE): The Characteristic Geometries and Vibrational Absorptions of Its Numerous Structures

Tetracyanoethylene (TCNE): The Characteristic Geometries and Vibrational Absorptions of Its Numerous Structures

Tetracyanethylen: die charakteristischen Geometrien und Schwingungsabsorptionen seiner zahlreichen Strukturen

Eco Friendly Synthesis, Spectroscopic Investigation of Copper and Its Oxide Nanoparticles with Excellent Electrical Conductivity

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