Sawhorse-type diruthenium tetracarbonyl complexes

Therrien, Bruno; Süß‐Fink, Georg

doi:10.1016/j.ccr.2009.05.012

Cited by 54 publications

(48 citation statements)

References 139 publications

(373 reference statements)

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“…[9,11] Later on, the molecular structure of the labile solvent complexes [Ru 2 (μ-O 2 CR) 2 (CO) 4 L 2 ] (L = thf, acetonitrile, pyridine), supposed to be comparable to that of the isolated phosphane complexes, could also be confirmed by X-ray structure analysis, when Bruce et al isolated the acetonitrile . [9,11] Figure 2. Cutout of the structure of [Ru 2 (μ-OAc) 2 (CO) 4 (MeSCH 2 SMe)] n .…”

Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 74%

“…The Ru 2 (CO) 4 backbone with four terminal all-cis carbonyl ligands was presumed in the light of symmetry arguments (point group C 2v ) from the typical three-band ν(CO) signature around 2000 cm -1 . [8][9][10][11] The molecular structure of these dinuclear complexes was finally confirmed in 1977, when Schumann et al performed a single-crystal X-ray structure analysis of the PtBu 3 derivative of the butyrato complex [Ru 2 (μ-O 2 CC 3 H 7 ) 2 (CO) 4 -(PtBu 3 ) 2 ] (Figure 1). [9,11] Later on, the molecular structure of the labile solvent complexes [Ru 2 (μ-O 2 CR) 2 (CO) 4 L 2 ] (L = thf, acetonitrile, pyridine), supposed to be comparable to that of the isolated phosphane complexes, could also be confirmed by X-ray structure analysis, when Bruce et al isolated the acetonitrile .…”

Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 99%

“…The dinuclear nature of these solvent complexes was deduced from their reaction with phosphanes PR 3 leading to the corresponding phosphane complexes [Ru 2 (OAc) 2 (CO) 4 -(PR 3 ) 2 ], which were isolated and fully characterized by Lewis and co-workers. [8,9] In these pioneering studies, the structure of these dinuclear complexes was proposed entirely on the basis of mass spectrometry, NMR spectroscopy and, in particular, IR spectroscopy. The bridging μ 2 -κ 2 -O,O coordination mode of the carboxylato ligands was deduced from the two characteristic IR absorptions between 1550 and 1400 cm -1 , assigned to the symmetrical and asymmetrical ν(OCO) vibrations.…”

Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 99%

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1D Chains of Diruthenium Tetracarbonyl Sawhorse Complexes

et al. 2018

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Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 74%

Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 99%

Section: Nn-donor Ligand Trans-12-bis(n-methylimidazol-2-yl)ethylenmentioning

confidence: 99%

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1D Chains of Diruthenium Tetracarbonyl Sawhorse Complexes

et al. 2018

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“…All compounds exhibit in the m (CO) region of the infrared spectrum the characteristic pattern of the Ru 2 (CO) 4 sawhorse unit [3], which consists of three bands (very strong; medium; very strong) between 2100 and 1900 cm À1 ( Table 1). The two carboxylato bridges give rise to two m (OCO) absorptions between 1550 and 1430 cm À1 that correspond to the asymmetrical and the symmetrical stretching frequencies of the three-atom oscillators.…”

Section: Resultsmentioning

confidence: 99%

“…These dinuclear complexes were shown later, by a single-crystal X-ray structure analysis of Ru 2 (CO) 4 (OOCBu n ) 2 (PBu t 3 ) 2 , to possess a Ru 2 (CO) 4 backbone in a sawhorse-type arrangement with two l 2 -g 2 -carboxylato bridges (OOCBu n ) and two axial two-electron donor ligands (PBu t 3 ) [2]. Since their discovery, a considerable number of such sawhorse-type diruthenium complexes with carboxylato bridges have been synthesised and used for various applications ranging from catalysis to materials chemistry [3]. Recently, we found porphyrin derivatives of complexes of the type Ru 2 (CO) 4 (OOCR) 2 L 2 (R = methyl, 5-(4-phenyl)-10,15,20-triphenylporphyrin; L = triphenylphosphine, 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane, 5-(4-pyridyl)-10,15,20-triphenylporphyrin) to exhibit considerable phototoxicity specific for certain cancer cell lines [4].…”

Section: Introductionmentioning

confidence: 99%

Ru2(CO)4(OOCR)2L2 sawhorse-type complexes containing axial 5-(4-pyridyl)-10,15,20-triphenylporphyrin ligands

Gras

Barry

Therrien

et al. 2011

Inorganica Chimica Acta

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a b s t r a c tThe thermal reaction of Ru 3 (CO) 12 with various carboxylic acids (benzoic, 4-hydroxyphenylacetic, ferrocenic, stearic, oleic, 4-(octadecyloxy)benzoic) in refluxing tetrahydrofuran, followed by addition of 5-(4-pyridyl)-10,15,20-triphenylporphyrin (L), gives the dinuclear complexes Ru 2 (CO) 4 (OOCR) 2 L 2 (1: R = -C 6 H 5 , 2: R = -CH 2 -p-C 6 H 4 OH, 3: R = -C 5 H 4 FeC 5 H 5 , 4: R = -(CH 2 ) 16 CH 3 , 5: R = -(CH 2 ) 7 CH@CH(CH 2 ) 7 CH 3 , 6: R = -p-C 6 H 4 O(CH 2 ) 17 CH 3 ). Complexes 1-6 were characterised by IR, NMR, and ESI-MS as well as by elemental analysis. The UV-Vis spectra show the Soret band centred at 417 nm and the Q bands at 515, 550, 590 and 645 nm, respectively.

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Metal‐Containing Liquid Crystals

Pucci

Donnio

2014

Handbook of Liquid Crystals

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PreambleMetal-containing liquid crystals, commonly referred to as metallomesogens, a term invented by in the first comprehensive review on the subject, are metal complexes endowed with liquid crystalline (LC) properties. It is now well accepted that the first publication on metallomesogens was by Vorländer [2], who described in 1923 the smectogenic behavior of a series of Schiffbase complexes of diaryl mercury(II), despite earlier but sporadic publications on alkanoate magnesium salts by Heintz [3] and other related alkali metal soaps by Vorländer [4]. This field revived research interest half a century later with the concomitant pioneering publications by Malthête and Billard [5] on nematogenic ferrocene derivatives on the one hand and by Giroud and Mueller-Westerhoff on calamitic nickel(II) and platinum(II) dithiolene complexes (N and SmC phases) on the other hand [6].At first, metallomesogens were simply regarded as mere synthetic curiosities, but once the immense benefits of inserting metals into liquid crystals were acknowledged, activity in this field began to grow apace [1]. Metal-coordination of organic ligands indeed offers the possibility of obtaining a wide diversity of structures and functions (due to specific metal-metal, ligand-ligand, and metal-ligand synergies) as it is possible to combine a large range of potential organic ligands with metal ions of various numbers of coordination (NCs from 1 to 12). And indeed, numerous metallomesogens with new geometries (e.g., based on high coordination numbers) and shapes unattainable in organic systems diverging from standard calamitics and discotics, have been synthesized. Simultaneously, the use of multivalent ligands has also been more generalized and has led to intricate polymetallic systems that are expected to generate new functional supramolecular organizations. Evidently, metals are not limited to this purely structural role and, concomitantly to the production of metallomesogens with low transition temperatures and accessible mesophases, a wide range of physical properties (optical, magnetism, electronic, thermo-and solvatochromism, dichroism, conductivity, etc.), which crucially depend on the choice of the metal ion, can be exploited [7]. Incorporation of metals into modifications have led to new and sophisticated molecular structures, showing that the design of new LC materials is not restricted to simple shape anisotropies.The induction of preselected properties from the single molecular level to the supramolecular network in metal-containing materials is expected to expand the traditional range of technological applications of liquid crystals. It is currently possible to design new and better performing complexes whose structures, mostly unapproachable in purely organic LC systems, are able to induce low transition temperatures and modulate optical, electronic, magnetic, and thermal properties. Nowadays, the molecular design of metallomesogens is essentially based on the multimotif approach because of the spontaneous association of single func...

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Sawhorse-type diruthenium tetracarbonyl complexes

Cited by 54 publications

References 139 publications

1D Chains of Diruthenium Tetracarbonyl Sawhorse Complexes

1D Chains of Diruthenium Tetracarbonyl Sawhorse Complexes

Ru2(CO)4(OOCR)2L2 sawhorse-type complexes containing axial 5-(4-pyridyl)-10,15,20-triphenylporphyrin ligands

Metal‐Containing Liquid Crystals

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