Ring opening reactions of pyromellitic dianhydride for the synthesis of first row transition metal dicarboxylate complexes

Baruah, Abhilasha M.; Karmakar, Anirban; Baruah, Jubaraj B.

doi:10.1016/j.poly.2007.05.054

Cited by 38 publications

(23 citation statements)

References 39 publications

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“…As shown in Table 2, the bond lengths of Cu-N are in the range of 1.945(6)-2.049(7) A with an average value of 2.013(7) A , comparable with those reported previously. [6][7][8][9] The bond length of Cu-Cl is 2.375(2) A , which is normal and comparable with the cases found in the literature. [10][11][12] Table 2.…”

Section: Resultssupporting

confidence: 71%

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Fang

Feng

et al. 2014

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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A cuprous compound CuCl(2,2 0 -bipyridine) 2 ¢3.5H 2 O (1) has been prepared through a hydrothermal reaction and structurally characterized by single crystal X-ray diffraction. The crystal structure analysis revealed that compound 1 is characterized by an isolated structure, based on CuCl(2,2 0 -bipyridine) 2 moieties and lattice water molecules. The Cu C ion coordinates to four nitrogen ions of two 2,2 0 -bipyridine molecules and one terminal chloride ion. Photoluminescent study displays that compound 1 has strong and broad emission bands, in combination with the molecular orbital (MO) calculation of 1, lead us to conclude that the emissions originate from ligand-to-ligand charge transfer (LLCT) transition.

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Section: Resultssupporting

confidence: 71%

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Fang

Feng

et al. 2014

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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“…Within each complex cation, both phenanthroline ligands exhibit nearly perfect planarity and constitute an orthogonal system with the coordinating carboxylate group of the phenylacetate anion. The complex cation displays as imilar configuration to the observed in as uccinato complex [Cu(phen) 2(C4H4O4)] [3] and all the bonding parameters are normal [4]. Surprisedly, ad ifferent crystal structure of [Cu(phen) 2 2 Ow as reported by us, which grown in same experimental condition [5].…”

Section: Discussionsupporting

confidence: 65%

Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline- N,N')copper(II)] phenylacetate hexahydrate, [Cu(C₁₂H₈N₂)(OH)(H₂O)]₂[C₈H₇O₂]₂ · 6H₂O

Tu¹,

Ren²,

Ju³

et al. 2009

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialDropwise addition of 1.0 ml of Na2CO3 (1 Msolution) to aaqueous solution of CuCl 2.·.2H2O( 0.170 g, 1.0 mmol) in 5.0 ml of H 2 Ogave ablue precipitate, which was separated by centrifugation and washed with water until no Cl anions were detectable in the supernatant. The collected blue precipitate was transferred to amixture solution of ethanol and water (1:1 v/v,10ml), to which 1,10-phenanthroline (phen, 0.198 g, 1.00 mmol) and phenyl-acetic acid (0.136 g, 1.00 mmol) were added successively. The resulting blue solution (pH =7.82) was allowed to stand at room temperature. Blue block-like crystals were grown by slow evaporation for over 7days. DiscussionThe crystal structure of the title compound is composed of a dinuclear cation [Cu(C 12H8N2)(OH)(H2O)]2 2+ ,a na nion (C 8 H 7 O 2 ) 2 2-and six lattice water molecules. The local coordination of copper(II) ion is tetragonal pyramidal. Two nitrogen atoms of phen and two hydroxyl oxygen atoms are located in the equatorial plane of the tetragonal pyramid with 2+ units indicate significant p-p stacking interactions making acontribution to formation of two-dimensional layers with the interplanner distance of neighboring aromatic rings is 3.17 Å.Inthe phenylacetate anion, two oxygen atoms are in acommon plane and six carbon atoms reside in the other plane, the dihedral angle between the being 26.5°. Through extensive hydrogen bonds between the carboxylate oxygen atoms of free phenyl-acetate, m 2 -OH-, guest and coordination water molecules, along with p-p stacking interactions, title compound exhibits at hree-dimensional supramolecular framework.

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“…These binding modes complicate selective synthesis of metal carboxylate complexes [1][2][3][4][5][6][7][8][9][10][11][12]. A general approach to rationalize selective synthetic procedures for polynuclear carboxylate complexes would require extensive structural study on carboxylate complexes prepared via different synthetic routes [13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Manganese and Cadmium Benzoate Complexes Having 8-Aminoquinoline Ancillary Ligand

Baruah¹,

Karmakar²,

Baruah³

2008

TOICJ

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Simple synthetic methods for synthesis of trinuclear manganese(II) benzoate complexes having 8-aminoquinoline as ancillary ligand are reported. The crystal structure of two trinuclear manganese(II) complexes, [Mn 3 (2-NO 2 C 6 H 4 COO) 6 (AQ) 2 ] (I) and [Mn 3 (3-CH 3 C 6 H 4 COO) 6 (AQ) 2 ].NPD (II) is reported (where AQ = 8-aminoquinoline, NPD = 1,5 dihydroxynaphthalene). In solution, the degradation of trinuclear complex I leads to a dinuclear complex [Mn 2 (2-NO 2 C 6 H 4 COO) 4 (AQ) 2 (H 2 O) 2 ] (III) and structure of complex III is reported. A solution phase synthetic method for the synthesis of the dinuclear manganese(II) complex III is also reported. This complex has a Mn 2 O 2 bridge originating from the carboxylate ligand. Synthesis of a cadmium 2-nitrobenzoate co-ordination polymer [Cd(2-NO 2 C 6 H 4 COO) 2 (AQ)] n (IV) having eight co-ordination number is reported and its structure is explained as aggregation of multiple numbers of six coordinated mononuclear cadmium complexes. Keywords:Metal carboxylates, 8-aminoquinoline, manganese trinuclear complexes, cadmium co-ordination polymer. INTRODUCT IONCarboxylate ligands can bind to metal ions in several ways, such as monodentate, bidentate, bridging etc. These binding modes complicate selective synthesis of metal carboxylate complexes [1][2][3][4][5][6][7][8][9][10][11][12]. A general approach to rationalize selective synthetic procedures for polynuclear carboxylate complexes would require extensive structural study on carboxylate complexes prepared via different synthetic routes [13][14][15][16][17][18][19][20][21][22][23][24][25]. Retro-analysis of structures of polynuclear metal complexes provides information on the smallest mononuclear building blocks to form assemblies [26]. Such approach is applied to carboxylate complexes that are prepared through hydrothermal method. Comparison of structure of complexes prepared through solution route or some other related methods is essential to understand nucleation process. It is necessary to choose ligand that has versatility to form different types of metal complexes [27][28][29][30][31][32][33]. There is vast literature on mononuclear and polynuclear metal carboxylate complexes [13][14][15][16][17][18][19][20][21][22][23][24][25]34], thus the metal carboxylate complexes would be suitable for such study. The rationalization of the structural aspect through co-ordination capability of the metal ions can be another approach to standardize synthetic procedures. In this study the synthesis and structures of the trinuclear manganese complexes, and co-ordination polymer of cadmium having 8-aminoquinoline (AQ) are reported. MATERIALS AND METHODS Synthesis and Spectroscopic Properties of Complexes [Mn 3 (2-NO 2 C 6 H 4 COO) 6 (AQ) 2 ] (I)Manganese acetate tetrahydrate (0.245 g, 1 mmol) and 2-nitrobenzoic acid (0.334 g, 2 mmol) were mixed in a mor-*Address correspondence to this author at the Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039 Assam, India; E-mail: juba@iit...

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Ring opening reactions of pyromellitic dianhydride for the synthesis of first row transition metal dicarboxylate complexes

Cited by 38 publications

References 39 publications

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline- N,N')copper(II)] phenylacetate hexahydrate, [Cu(C₁₂H₈N₂)(OH)(H₂O)]₂[C₈H₇O₂]₂ · 6H₂O

Manganese and Cadmium Benzoate Complexes Having 8-Aminoquinoline Ancillary Ligand

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Ring opening reactions of pyromellitic dianhydride for the synthesis of first row transition metal dicarboxylate complexes

Cited by 38 publications

References 39 publications

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)2·3.5H2O

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)2·3.5H2O

Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline- N,N')copper(II)] phenylacetate hexahydrate, [Cu(C12H8N2)(OH)(H2O)]2[C8H7O2]2 · 6H2O

Manganese and Cadmium Benzoate Complexes Having 8-Aminoquinoline Ancillary Ligand

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Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Synthesis, Structure, Fluorescence, and Theoretical Studies of CuCl(2,2′-Bipyridine)₂·3.5H₂O

Crystal structure of bis[(μ2-hydroxo)-aqua-(1,10-phenanthroline- N,N')copper(II)] phenylacetate hexahydrate, [Cu(C₁₂H₈N₂)(OH)(H₂O)]₂[C₈H₇O₂]₂ · 6H₂O