Polymorph Selective Growth of Sodium Tetrakis(2-pyridinecarboxylato) Lanthanides and Their Structure Sensitive Properties

Hong, Jung Hoon; Oh, Yunghee; Kim, Youngmee; Kang, Sung Kwon; Choi, Jungkweon; Kim, Wan Seop; Lee, Jong In; Kim, Sung Jin; Hur, Nam Hwi

doi:10.1021/cg7012705

Cited by 21 publications

(14 citation statements)

References 33 publications

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“…The reported distances of metal-oxygen in Nd, 7,9,10 Sm, 4,7,13 Eu, 6 Tb, 6 Dy, 8 Ho, 4,11 Er 12 complexes in a decreasing atomic radii are 2.460, 2.453, 2.390, 2.390, 2.342, 2.333 and 2.291 Å, respectively. The averaged bond distance of cerium-nitrogen in pyridine ring is 2.756 Å, which is in the range of expected value.…”

Section: Notesmentioning

confidence: 95%

“…The averaged bond distance of cerium-nitrogen in pyridine ring is 2.756 Å, which is in the range of expected value. The reported distances of metal-nitrogen in Nd, 7,9,10 Sm, 4,7,13 Eu, 6 Tb, 6 Dy, 8 Ho, 4,11 Er 12 complexes in a decreasing atomic radii are 2.674, 2.674, 2.619, 2.618, 2.520, 2.609, and 2.511 Å, respectively. The results conclude that the bond distances and coordination numbers are relevant with ion size.…”

Section: Notesmentioning

confidence: 96%

“…Sodium ions are bounded with water molecules and with carboxylate oxygen atoms to form a distorted octahedral geometry, which was observed in Na[Ln(pic)4] (Ln = Eu(III) or Tb(III)) already. 6 As shown in Figure 3, Na atom is bounded with four water and two oxygen atoms of picolinate ligands.…”

Section: Notesmentioning

confidence: 99%

“…We have already reported the preparation and crystal structures of europium and terbium picolinate complexes, Na[Ln(pic) 4 ]․ 2H2O (Ln = Eu(III), Tb(III)) using α-pyridoin. 6 This work is a continuation of preparation and structural characterization studies of lanthanide complexes. ).…”

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confidence: 99%

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Synthesis and Crystal Structure of Cerium(III) Picolinate Complex

Oh¹,

Kim²,

Kim³

et al. 2010

Bulletin of the Korean Chemical Society

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Lanthanide complexes containing organic ligand with conjugate group have been widely studied as those show characteristic luminescent properties, which are applied to biomedical, sensing and industrial fields.1 The luminescent properties originating from 4f-4f, 5d-4f and charge transfer transition of lanthanide ions can be controlled to construct artificially molecular design.2 However, the design and preparation of lanthanide complexes is more difficult than that of transition metal complexes because of high coordination number of lanthanide ions. Therefore, the coordination chemistry as well as luminescence of lanthanides has been another challenging research field to the synthetic scientists in recent decades. Pyridine carboxylates such as picolinate and nicotinate have been widely used to build lanthanide complexes because those molecules with nitrogen and oxygen atoms could efficiently transfer energy to lanthanide ion. [4][5] We are interested to make lanthanide complexes containing picolinate (pic) using α-pyridoin instead of picolinic acid, since the reaction with α-pyridoin is more clear and the yield is higher than using picolinic acid. We have already reported the preparation and crystal structures of europium and terbium picolinate complexes, Na[Ln(pic) 4 ]․ 2H2O (Ln = Eu(III), Tb(III)) using α-pyridoin.6 This work is a continuation of preparation and structural characterization studies of lanthanide complexes.Crystal structures of lanthanide picolinates have been reported as polymeric or mononuclearic structure. Most of them contained eight to nine coordinated metal with tris or tetrakis picolinates and water molecules, for example, [Ln(pic) ). We have successfully prepared new cerium(III) picolinate complex, 1, from the reaction of CeCl3․7H2O and α-pyridoin anion in methanol and characterized by X-ray crystallography, leading to a ten-coordinated cerium compound containing five picolinate ligands. Experimental SectionSynthesis and crystal growth. The α-pyridoin (0.630 g, 3 mmol) was dissolved in 20 mL methanol and 3 mL of 1M NaOH aqueous solution was added into the solution with stirring to generate α-pyridoin anion. The solution color turned to yellow. Cerium chloride hepta hydrate (0.372 g, 1 mmol) was dissolved in 10 mL methanol and added into the α-pyridoin anionic solution. The reaction mixture was stirred for one hour and kept at room temperature overnight. Solids were filtered off and the filtrate was kept in refrigerator for three weeks. Crystals were filtered, washed by methanol and dried under vacuum. Yield was 82% and the product was thermally decomposed at 390 o C. The reaction is summarized in Scheme 1.Determination and refinement of the X-ray Structure. The data for X-ray structure determination was collected on a Bruker SMART APEX-II CCD diffractormeter equipped with graphite monochromated Mo Kα radiation (λ = 0.71073 Å) at 295 K. Structure was solved by applying the direct method using a SHELXS97 and refined by a full-matrix least-squares calculation on F 2 using SHELXL97. 14 All no...

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Section: Notesmentioning

confidence: 95%

Section: Notesmentioning

confidence: 96%

Section: Notesmentioning

confidence: 99%

mentioning

confidence: 99%

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Synthesis and Crystal Structure of Cerium(III) Picolinate Complex

Oh¹,

Kim²,

Kim³

et al. 2010

Bulletin of the Korean Chemical Society

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“…We have reported that when europium(III) reacted with the α-pyridoin anion in methanol aerobically, metal complex in which europium was coordinated by picolinates (pic) was produced as shown in Figure 1. 10 The complex exhibited bright light-emitting properties when it was irradiated by UV light. We had fully characterized the crystal structure and the light-emitting properties of the europium complex.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Physical Properties of Red-photoluminescent Graphene/Europium(III)/Picolinate

Kim¹,

Lee²,

Kim³

et al. 2010

Bulletin of the Korean Chemical Society

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Novel photoluminescent graphene, graphene/europium/picolinate, was made from the reaction of the graphene carboxylate, europium(III) and α-pyridoin anion in methanol solution. There was evidence on IR spectroscopic data that europium metal was coordinated by graphene carboxylate. The graphene/europium/picolinate materials emitted the red luminescence with main peaks at 609 and 695 nm, when solid sample was excited by an UV light at the wavelength of 254 nm. The surface morphology and physical properties of the graphene/europium/picolinate product have been investigated by IR, PL, SEM, TEM and TGA measurements.

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Synthesis, Crystal Structures, and Photoluminescence of Lanthanide Coordination Polymers with 4‐Acetamidobenzoate

Yin

Fan

Wang

et al. 2011

Zeitschrift anorg allge chemie

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The reactions of Ln(NO 3 ) 3 ·6H 2 O and 4-acetamidobenzoic acid (Haba) with 4,4'-bipyridine (4,4'-bpy) in ethanol solution resulted in three new lanthanide coordination polymers, namely {[Ln(aba) 3 (H 2 O) 2 ]·0.5(4,4'-bpy)·2H 2 O} ∞ [Ln = Sm (1), Gd (2), and Er (3), aba = 4-acetamidobenzoate]. Compounds 1-3 are isomorphous and have one-dimensional chains bridged by four aba anions. 4,4'-Bipyri-* Dr. J. Fan

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Polymorph Selective Growth of Sodium Tetrakis(2-pyridinecarboxylato) Lanthanides and Their Structure Sensitive Properties

Cited by 21 publications

References 33 publications

Synthesis and Crystal Structure of Cerium(III) Picolinate Complex

Synthesis and Crystal Structure of Cerium(III) Picolinate Complex

Preparation and Physical Properties of Red-photoluminescent Graphene/Europium(III)/Picolinate

Synthesis, Crystal Structures, and Photoluminescence of Lanthanide Coordination Polymers with 4‐Acetamidobenzoate

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