Anion Dependent Self-Assembly of “Tetra-Decker” and “Triple-Decker” Luminescent Tb(III) Salen Complexes

Yang, Xiaoping; Jones, Richard A.

doi:10.1021/ja051292c

Cited by 191 publications

(80 citation statements)

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“…10 Nonetheless, in the formation of the series of binuclear triple-decker, 11 trinuclear triple-decker, 12 trinuclear tetra-decker 13 or pentanuclear tetra-decker lanthanide complexes, 14 different Salen-type Schiff-base ligands with rigid linkers have been used, and their photophysical properties should be further enhanced, despite the chromophores with rigid linkers absorbing at longer wavelength. Moreover, the selfassembly from LnX 3 (X À ¼ OAc À or CF 3 SO 3 À ) with the Salentype Schiff-base ligands with the flexible linkers usually gives the formation of polymeric lanthanide coordination complexes, not the discrete polynuclear lanthanide complexes.…”

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confidence: 99%

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

et al. 2012

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confidence: 99%

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

et al. 2012

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“…[6] Apart from organometallic compounds, triple-and multidecker sandwich complexes of the 4f elements consisting of "salen" type Schiff base ligands, [7] phthalocyanines, and porphyrins have been extensively studied because these compounds exhibit tunable spectroscopic, electronic, and redox properties, and different extents of intramolecular p-p interactions.…”

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confidence: 99%

Mixed‐Metal Lanthanide–Iron Triple‐Decker Complexes with a cyclo‐P₅ Building Block

Wiecko

Pushkarevsky

et al. 2011

Angew Chem Int Ed

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Triple-and multidecker sandwich complexes have been discussed in the last decades for their unique electrical and magnetic properties. The organic spacer between the metals may facilitate intermetallic electronic communication, which has a high potential for molecular electronics.[1] A number of one-dimensional organometallic sandwich molecular wires (SMWs) have been extensively studied. Thus, the multilayer vanadium-arene (Ar) organometallic complexes [V n (Ar) m ], which can be produced in a molecular beam by laser vaporization, are a class of one-dimensional molecular magnets.[2] Ferrocene-based molecular wires have been synthesized in the gas phase and characterized by mass spectroscopy.[3] It was calculated that these compounds have half-metallic properties with 100 % negative spin polarization near the Fermi level in the ground state.[4] In contrast to this investigation in the gas phase, studies on related organometallic triple-and multidecker sandwich complexes containing f-block elements (lanthanides or actinides) in condensed phase remain rare;[5] studies were mostly on the cyclooctatetraene ligand and its derivatives. The only rare-earth-element triple-decker complex with heterocycles is the low-valent scandium 1,3,5-triphosphabenzene complex [{(h 5 -P 3 C 2 tBu 2 )Sc} 2 (m-h 6 :h 6 -P 3 C 3 tBu 3 )], which was obtained by cocondensation of scandium vaporized in an electron beam with an excess of the phosphaalkyne tBuCP.[6] Apart from organometallic compounds, triple-and multidecker sandwich complexes of the 4f elements consisting of "salen" type Schiff base ligands, [7] phthalocyanines, and porphyrins have been extensively studied because these compounds exhibit tunable spectroscopic, electronic, and redox properties, and different extents of intramolecular p-p interactions.[8] Despite these promising physical properties further investigations on 4f elements based triple-and multidecker sandwich complexes are obviously hampered by the limited variety of ligands that have been attached to the metal centers to date. Based on these considerations, we present herein mixed d/f-block-metal triple-decker complexes with a purely inorganic all-phosphorus middle deck.In contrast to d-block chemistry, where purely inorganic ring systems of Group 15 elements such as P 5 and P 6 , [9] As 5 , [9c] and Sb 5 [10] are well-established, there is no analogy with the fblock elements to date. On the other hand, it was shown only recently that rare-earth elements can stabilize highly reactive main-group species such as N 2 3À .[11] Although some heavier Group 15-lanthanide compounds, such as phosphides (Ln À PR 2 ), [12] arsenides (Ln À AsR 2 ), [12d, 13] stibides (Ln À Sb 3 ), [14] and bismutides (LnÀBiÀBiÀLn) [15] are known, the first molecular polyphosphide of the rare-earth elements, [(Cp* 2 Sm) 4 P 8 ] (Cp* = h 5 -C 5 Me 5 ), was recently synthesized. [16] The structure of the complex is very rare and can be described as a realgartype P 8 4À ligand trapped in a cage of four samarocenes. As no triple-decker sandw...

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“…years [1][2][3][4]. Schi base and its transition metal complexes have become the hot topic of research [5].…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(2,4-dibromo-6-{(E)[(4-fluorobenzyl)imino]methyl}phenolato-κ² N,O) copper(II), C₂₈H₁₈Br₄F₂N₂O₂Cu

Lü

Lei

2016

Zeitschrift Für Kristallographie - New Crystal Structures

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C 28 H 18 Br4CuF 2 N 2 O 2 , monoclinic, C2 (no. 5), a = 14.6518(8) Å, CCDC no.: 1449858The crystal structure is shown in the gure. Tables 1-3 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters. Source of material3,5-dibromo-2-hydroxybenzaldehyde 2.80 g (10 mmol) and (4-uorobenzyl)methanamine 1.25 g (10 mmol) were dissolved in ethanol and stirred for 2 h at a temperature of 65°C. After evaporation, a crude product was recrystallized twice

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Anion Dependent Self-Assembly of “Tetra-Decker” and “Triple-Decker” Luminescent Tb(III) Salen Complexes

Abstract: The Schiff base complexes [Tb3L4(H2O)2]Cl and [Tb3L3(OAc)2Cl] both have unusual multi-decker architectures formed via intramolecular pi-pi interactions between phenylene units.

Cited by 191 publications

References 12 publications

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

Mixed‐Metal Lanthanide–Iron Triple‐Decker Complexes with a cyclo‐P₅ Building Block

Crystal structure of bis(2,4-dibromo-6-{(E)[(4-fluorobenzyl)imino]methyl}phenolato-κ² N,O) copper(II), C₂₈H₁₈Br₄F₂N₂O₂Cu

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Anion Dependent Self-Assembly of “Tetra-Decker” and “Triple-Decker” Luminescent Tb(III) Salen Complexes

Abstract: The Schiff base complexes [Tb3L4(H2O)2]Cl and [Tb3L3(OAc)2Cl] both have unusual multi-decker architectures formed via intramolecular pi-pi interactions between phenylene units.

Cited by 191 publications

References 12 publications

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

Mixed‐Metal Lanthanide–Iron Triple‐Decker Complexes with a cyclo‐P5 Building Block

Crystal structure of bis(2,4-dibromo-6-{(E)[(4-fluorobenzyl)imino]methyl}phenolato-κ2 N,O) copper(II), C28H18Br4F2N2O2Cu

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Mixed‐Metal Lanthanide–Iron Triple‐Decker Complexes with a cyclo‐P₅ Building Block

Crystal structure of bis(2,4-dibromo-6-{(E)[(4-fluorobenzyl)imino]methyl}phenolato-κ² N,O) copper(II), C₂₈H₁₈Br₄F₂N₂O₂Cu