Chelating and bridging bis(diphenylphosphino)aniline complexes of copper(I)

Ahuja, Ritu; Nethaji, Munirathinam; Samuelson, Ashoka G.

doi:10.1016/j.ica.2011.03.035

Cited by 23 publications

(14 citation statements)

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“…A singlet resonance at δ = 59.9 and 56.9 ppm was observed in the 31 P NMR spectra of complexes 5 and 6 , respectively, and it seems to be slightly upfield compared with that of ligand L3 ( δ = 68.5 ppm), but in agreement with those reported for Cu 4 (dppan) 2 Cl 4 (59.1 ppm), Cu 4 (dppan) 2 Br 4 (59.0 ppm) [dppan = bis(diphenylphosphanyl)aniline]. [13a] The molecular structures of complexes 5 and 6 with atom‐numbering schemes are shown in Figure and Figure S3, respectively. The molecular structure of 5 consists of a [{Cu 4 (µ 2 ‐Cl) 2 (µ 3 ‐Cl) 2 }] core (Figure ), while the molecular structure of 6 contains a [{Cu 4 (µ 2 ‐Br) 2 (µ 4 ‐Br) 2 }] core (Figure S3).…”

Section: Resultssupporting

confidence: 84%

“…The peaks from 330 to 370 nm indicate the halide‐to‐ligand charge transfer (XLCT) transition. [13b] Mechanochromism is the change of the color of emission upon addition of a mechanical stimulus, typically grinding of the samples. The unground and ground forms have a propensity to exhibit different molecular arrangements and intermolecular interactions, leading to different photophysical properties .…”

Section: Resultsmentioning

confidence: 99%

“…The lifetime values for these complexes ( 3 – 6 ) are detected in µs (Table ), reflecting that these emissions are from triplet excited states. [13b]…”

Section: Resultsmentioning

confidence: 99%

“…It has to be noted here that the reactions of simple (PPh 2 ) 2 NPh ligands with copper(I) halides led to tetrameric structures. [13a] These findings indicate that the ligand substituent has a vital role on the structural arrangement as well as on the resulting photophysical properties of the complexes . Therefore, we sought to alter the position of the methyl substituents in the N ‐phenyl ring and isolate the resulting copper complexes.…”

Section: Introductionmentioning

confidence: 99%

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Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Kathewad

Pal

Kumawat³

et al. 2018

Eur J Inorg Chem

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The dinuclear copper(I) complexes 1 and 2 were prepared by reacting PNP ligands ArN(PPh 2 ) 2 , (Ar = 2,6-Me 2 C 6 H 3 ; L1) with CuCl and CuBr. By altering the position of the methyl substituents from ortho to meta (Ar = 3,5-Me 2 C 6 H 3 ; L2), trinuclear copper(I) complexes 3 and 4 were obtained, while the methyl substituent at the para position (Ar = 4-MeC 6 H 4 ; L3) ledThe copper(I) complexes have been studied recently with great interest as they exhibit structural diversities, [1] metallophilicity, [2] rich photophysical properties, [3] and have been found to have applications in catalysis, [4] as well as in organic light-emitting diodes (OLEDs) as dopants. [5] Previous studies showed that a wide range of structure motifs are accessible by combining copper halides and a variety of N-, P-, O-, and S-based ligand systems leading to di-, tri-, and, tetra-nuclear copper(I) complexes that show strikingly different luminescent behavior. [6][7][8][9] Recently, we reported on the synthesis and luminescence studies of gold(

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

“…The lifetime values for these complexes ( 3 – 6 ) are detected in µs (Table ), reflecting that these emissions are from triplet excited states. [13b]…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Kathewad

Pal

Kumawat³

et al. 2018

Eur J Inorg Chem

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“…Evaluation is carried out using the Item Response Theory (IRT). IRT is utilized instead of the Classical Test Theory (CTT) which has the weakness of being test-dependent, which means that the ability of individuals is influenced by the characteristics of items in a test (Embretson & Reise, 2000;Fan, 1998). The ability of test-takers changes depending on different occasions when they take the test results in poor test consistency (Magno, 2009).…”

Section: Introductionmentioning

confidence: 99%

Psychometric properties of the SE-Revised: A rasch model analysis

2019

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Satz Ergaenzung (SE) is the first subtest in the Intelligenz Struktur Test (IST) that measures reasoning ability. Previous studies found that SE has suboptimum performance in measuring subject's ability. Therefore, this study intended to revise the SE items that were found to have poor psychometric properties, either by changing the questions and answer choices, the answer choices only, or changing the order of the questions. This study used the rasch model to determine the psychometric property of SE-revised. A total of 159 undergraduate students of a university in Riau participated in this study. The results showed that the revised SE had fulfilled the prerequisites of unidimensionality. The instrument reliability increased after being revised, where the items of SE-revised correctly measure respondents' abilities. The revised version may be used as an improvement of the original SE, with better psychometric properties. However, there were four items with low difficulty index and two items that have DIF. Even though SE-revised is better than the original SE, further research is needed to revise the six items of SErevised subtest.

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Heterometallic Mixed‐Valence Copper(I,II) Cyanides that were Tuned by Using the Chelate Effect: Discovery of Famous Cairo Pentagonal Tiling and Unprecedented (3,4)‐Connected {8³}₂{8⁶} Topological 3D Net

Qin

Yao

et al. 2013

Chemistry An Asian Journal

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By using environmentally friendly [Ni(CN)4](2-) as a cyanide source, three new heterometallic cyano-bridged mixed-valence Cu(I)/Cu(II) coordination polymers with three different electronic configurations (d(8)-d(10)), that is, [Cu2Ni(CN)5(H2O)3] (1), [Cu2Ni(CN)5(pn)H2O] (2), and [Cu3Ni(CN)6(pn)2] (3, pn = 1,2-propane diamine) have been synthesized by gradually increasing the amount of pn. Compound 1, which was hydrothermally synthesized in the absence of pn ligand, exhibits the famous 2D Cairo pentagonal tiling, in which the Cu(I), Cu(II), and Ni(II) atoms act as trigonal, T-shaped, and square-planar nodes, respectively. Notably, there are three water molecules located at the meridianal positions of the octahedrally coordinated Cu(II) atom in compound 1. A similar reaction, except for the addition of a small amount of pn, generated a similar Cairo pentagonal tiling layer in which two of the water molecules that were located at the meridianal positions of the octahedrally coordinated Cu(II) atom were replaced by a chelating pn group. Another similar hydrothermal reaction, with the addition of a larger amount of pn, yielded compound 3, which showed a related two-fold-interpenetrated (3,4)-connected 3D framework with an unprecedented {8(3)}2{8(6)} topology in which the Cu(II) atom was chelated by two pn groups. These structural changes between compounds 1-3 can be explained by the chelating effect of the pn group. The replacement of two meridianally coordinated water molecules on the octahedral Cu(II) atom in compound 1 by a pn group gives compound 2, which shows similar Cairo tiling, and a further increase in the amount of pn results in the formation of the [Cu(NC)2(pn)2] unit and the two-fold-interpenetrated 3D framework of compound 3. The mixed-valence properties of compounds 1, 2, and 3 were confirmed by variable-temperature magnetic-susceptibility measurements.

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Chelating and bridging bis(diphenylphosphino)aniline complexes of copper(I)

Cited by 23 publications

References 50 publications

Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Psychometric properties of the SE-Revised: A rasch model analysis

Heterometallic Mixed‐Valence Copper(I,II) Cyanides that were Tuned by Using the Chelate Effect: Discovery of Famous Cairo Pentagonal Tiling and Unprecedented (3,4)‐Connected {8³}₂{8⁶} Topological 3D Net

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Chelating and bridging bis(diphenylphosphino)aniline complexes of copper(I)

Cited by 23 publications

References 50 publications

Synthetic Diversity and Luminescence Properties of ArN(PPh2)2‐Based Copper(I) Complexes

Synthetic Diversity and Luminescence Properties of ArN(PPh2)2‐Based Copper(I) Complexes

Psychometric properties of the SE-Revised: A rasch model analysis

Heterometallic Mixed‐Valence Copper(I,II) Cyanides that were Tuned by Using the Chelate Effect: Discovery of Famous Cairo Pentagonal Tiling and Unprecedented (3,4)‐Connected {83}2{86} Topological 3D Net

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Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Synthetic Diversity and Luminescence Properties of ArN(PPh₂)₂‐Based Copper(I) Complexes

Heterometallic Mixed‐Valence Copper(I,II) Cyanides that were Tuned by Using the Chelate Effect: Discovery of Famous Cairo Pentagonal Tiling and Unprecedented (3,4)‐Connected {8³}₂{8⁶} Topological 3D Net