Oxidation of coordinated nitric oxide by free nitric oxide

Gwost, D.; Caulton, Kenneth G.

doi:10.1021/ic50132a035

Cited by 49 publications

(19 citation statements)

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“…The assignments of these transitions have been given in the same table, and are based on molecular orbital diagram applicable to hexa coordinated dinitrosyl complexes reported elsewhere. 66 These observations are in agreement with the results reported in the similar type of metallic systems. 67 The presence of five excitation probabilities indicates the different types of bindings inside the system.…”

Section: Resultssupporting

confidence: 92%

Nitric oxide functionalized molybdenum(0) pyrazolone Schiff base complexes: thermal and biochemical study

Mir

Maurya

2018

RSC Adv.

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Section: Resultssupporting

confidence: 92%

Nitric oxide functionalized molybdenum(0) pyrazolone Schiff base complexes: thermal and biochemical study

Mir

Maurya

2018

RSC Adv.

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“…Nitric oxide disproportionation induced by mononuclear late divalent transition metal complexes (Mn, Fe, Ru, Co and Cu) has been well documented. [81][82][83][84][85][86][87][88][89][90][91][92] In 2013, Tsai and co-workers extended this field to the quintuple bonded dinuclear complexes. They succeeded in this type of reaction with both Cr and Mo quintuple bonded amidinate dimers.…”

Section: Reactions With Small Inorganic Moleculesmentioning

confidence: 99%

Theory, synthesis and reactivity of quintuple bonded complexes

2014

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This perspective reviews recent advances in the newly discovered metal-to-metal quintuple bonded complexes. The idea of the structures of the metal-metal quintuple bonded complexes was initiated by theoreticians in 1979 and 2001 based on two types of model compounds, the D3h M2L6 and trans-bent M2H2, respectively. This theoretical hypothesis was put into practice in 2005 with the preparation of the first isolable quintuple bonded chromium terphenyl dimer Cr2Ar'2 (Ar' = 2,6-(2,6-i-Pr2C6H3)2C6H3). After this landmark discovery, many N-based donor-stabilized dinuclear group 6 quintuple bonded complexes with very short metal-metal separations have been identified by X-ray crystallography, and their quintuple bonding was corroborated by magnetic measurements and theoretical calculations. Unlike the quadruple bonded bimetallic units uniformly supported in a tetragonal environment, the configuration of the characterized quintuple bonded dinuclear complexes varies with the ligands and metals. Three types of quintuple bonded complexes have been identified to date. In addition to their geometry variation and interesting bonding schemes, these low-valent and low-coordinate quintuple bonded complexes are highly reducing and have been shown to be reactive towards small inorganic molecules and unsaturated organics.

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“…A band at 1939 cm' was observed for Co(1.88 wt%)-ZSM-5 (Si/Al = 15 and Co/Al = 0.35), but not for Co(0.91 wt%)-ZSM-5 (Co/Al = 0.61), Co(1.55 wt%)-ZSM-5 (Co/Al = 0. 22) or Co(2.3 wt%)-ZSM-5 (Co/Al = 0.42) [11].…”

Section: Coordination and Valence State Of Co In Dehydrated Co-zsm-5 mentioning

confidence: 99%

“…It has been suggested that a negative nitrosyl complex is not observed [12]. Other publications suggest that a negative mononitrosyl complex is formed with partial oxidation of Co(II) on the basis of single-crystal X-ray data and infrared (IR) spectroscopy [20][21][22]. Other work shows that two molecules of NO interact with Co(II) ion in faujasite-type zeolite to form Co(0)-(NO)22 on the basis of electron spin resonance (ESR) and optical spectroscopy [23].…”

Section: Introductionmentioning

confidence: 99%

Electron spin resonance and optical spectroscopic studies of Co-ZSM-5 with nitric oxide

et al. 2000

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The reaction of nitric oxide with ZSM-5 zeolite ion-exchanged by Co(II) (Co-ZSM-5) has been studied by electron spin resonance (ESR), Fourier transform infrared (FTIR) and diffuse reflectance ultraviolet-visible spectroscopy. When dehydrated Co-ZSM-5 reacts at room temperature with nitric oxide, the ESR spectrum of Co(II) at g = 5.5, which is only observable below 45 K, is greatly reduced and a new 59 Co hyperfine octet forms at g,,g = 2.11. The overall Co(II) ESR intensity decreases by about 50% which suggests formation of some diamagnetic cobalt complex. Mononitrosyl cobalt complexes such as Co(I)-NO or less probably Co(III)-(NO) -are suggested as possible precursors of a dintrosyl cobalt complex. The octet indicates hyperfine interaction with "Co and is associated with a cobalt dinitrosyl complex. FTIR bands at 1813 and 1896 cm -' confirm a dinitrosyl species and a broad band from 1600-1800 cm -' is tentatively interpreted as a mononitrosyl species. The visible spectrum for dehydrated Co-ZSM-5 shows a tetrahedral Co(II) band from 500-700 nm with three components which disappears after NO adsorption at room temperature. We suggest that Co(0)-(NO)2 + forms after NO adsorption onto Co(II)-ZSM-5 zeolite on the basis of ESR and ultraviolet-visible spectroscopy.

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Oxidation of coordinated nitric oxide by free nitric oxide

Cited by 49 publications

References 1 publication

Nitric oxide functionalized molybdenum(0) pyrazolone Schiff base complexes: thermal and biochemical study

Nitric oxide functionalized molybdenum(0) pyrazolone Schiff base complexes: thermal and biochemical study

Theory, synthesis and reactivity of quintuple bonded complexes

Electron spin resonance and optical spectroscopic studies of Co-ZSM-5 with nitric oxide

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