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Volumn 46, Issue 23, 2007, Pages 4385-4387

∞3[Eu(Tzpy)2]: A homoleptic framework containing {EuIIN12} icosahedra

Author keywords

Amides; Coordination polymers; Lanthanides; Metal organic frameworks; N ligands

Indexed keywords

COORDINATION POLYMERS; METAL-ORGANIC FRAMEWORKS; SOLVOTHERMAL CONDITIONS;

EID: 34447248849     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200603682     Document Type: Article
Times cited : (40)

References (56)
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    • Two samples of ∞3[Eu(Tzpy)2] were well-mixed with BN or celite (diatomaceous earth, respectively. They were then investigated by 151Eu Mössbauer spectroscopy at 78 K. The spectra of both samples show a main signal at δ, 12.9 mm s-1, which corresponds to EuII. Both samples also exhibit a weak signal at δ, 0.8 mm s-1, which corresponds to EuIII. The resulting ratio of EuII/EuIII is 80:20, which could indicate mixed valency in the compound. However, because of the air and moisture sensitivity of ∞3[Eu(Tzpy)2, the small amount of EuIII detected in the spectrum could also be caused by partial decomposition or hydrolysis. Indeed, the powder X-ray diffraction patterns of the samples used for 151Eu Mössbauer spectroscopy show weak reflections indexed to Eu2O3 and EuOOH. T
    • 2] are divalent (see also the Supporting Information).
  • 53
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    • Crystallographic data for ∞3[Eu(Tzpy) 2, C10H6N8Eu, Mr, 390.2 g mol-1, crystal size: 0.1 x 0.1 x 0.05 mm3, space group R3c (no. 167, a1.2, 1409.9(2, c, 6940.9(6) pm, T, 170 K, Z, 36, V, 11949(3) × 106 pm3, ρcalcd, 1.952 g cm-3, 2θmax, 47.98°, STOE IPDS II diffractometer, ω scans (Δω, 2°, φ, 0.90°, MoKα radiation, λ, 0.71073 Å, 32697 reflections, 2051 unique reflections, 921 reflections with I > 2σ(I, 161 refined parameters, R1, 0.0606 (I > 2σ(I, wR 2, 0.0956 (all data, residual electron density: +1.15/-0.83 e/(106pm3, The structure was solved using direct methods SHE
    • III 60.1(7). Symmetry operations: I: -y, x-y, z; II: y + 1/ 3, x-1/3, -z + 1/6; III: -x, -y, -z; IV: y, -x + y, -z; V: -x + 1/3, -x + y-1/3, -z + 1/6, VI: -x + y, -x, z.
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    • a) G. M. Sheldrick, SHELXS-97, Program for the Solution of Crystal Structures, Universität Göttingen, 1997;
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    • G. M. Sheldrick, SHELXL-97, Program for the Refinement of Crystal Structures, Universität Göttingen, 1997;
    • b) G. M. Sheldrick, SHELXL-97, Program for the Refinement of Crystal Structures, Universität Göttingen, 1997;


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.