Infrared spectra and normal coordinate analysis of bis(ethylenediamine) and bis(trimethylenediamine) complexes with copper(II)

Fleming, Guillermo Díaz; Shepherd, Rex E.

doi:10.1016/0584-8539(87)80031-4

Cited by 26 publications

(7 citation statements)

References 22 publications

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“…A particularly signiÐcant feature is the strong peak observed for both the dehydrated and hydrated template at 360 cm~1 ; this has been assigned elsewhere to skeletal vibrations of the hydrocarbon chain. 24,25 This assignment has been conÐrmed with our DFT calculations. We have calculated the vibrational spectrum of the 3 tal ALPO spectrum, there is a peak at about the same frequency but with a reduced intensity.…”

Section: Region Below 150 Cm-1supporting

confidence: 77%

Dynamics of water and template molecules in the interlayer space of a layered aluminophosphate. Experimental inelastic neutron scattering spectra and molecular dynamics simulated spectra

Ramirez‐Cuesta¹,

Mitchell²,

Parker³

et al. 1999

Phys. Chem. Chem. Phys.

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Section: Region Below 150 Cm-1supporting

confidence: 77%

Dynamics of water and template molecules in the interlayer space of a layered aluminophosphate. Experimental inelastic neutron scattering spectra and molecular dynamics simulated spectra

Ramirez‐Cuesta¹,

Mitchell²,

Parker³

et al. 1999

Phys. Chem. Chem. Phys.

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“…The strong multiple peaks between 3000 and 2800 cm -1 are assigned to the CH stretching vibrations, and those around 1450 and 1296 cm -1 to the CH 2 deformation and twisting vibrations. 23,24 The C-C stretching modes, mixed with the C-N ones, appear in the region 1130-1062 cm -1 , 26 and the band features of both spectra in this region are characteristic of all-trans hydrocarbon chains. 24 It has been established that the band intensity ratio of the methylene symmetric (ca.…”

Section: Ft-raman and Ft-ir Spectra Of Cast Films From The Complexed ...mentioning

confidence: 99%

Complexed Bilayer Membranes with Novel Structural Features Formed by Single-Chain Amphiphiles

Zhang

Liang

1997

Langmuir

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Stable synthetic bilayer membranes with Cu2+-coordinated headgroups can be formed by the series of single-chain amphiphiles, C n H2 n +1NHC2H4NH2 (n = 8, 12, 14, 16, 18), in dilute aqueous Cu(NO3)2. The novel structural features of the membrane system have been investigated thoroughly via X-ray diffraction (XRD), Fourier transform Raman (FT-Raman) and infrared (FT-IR), and electronic reflectance spectroscopies. Two bilayer packing fashions were conclusively proposed: the tail-to-tail model for the n = 8 amphiphiles and the interdigitation one for the n > 8 amphiphiles. It was revealed at the molecular level that the balance and matching between the headgroup coordination and the hydrophobic assembly of the alkyl chains endow the complexed bilayer membranes with structural varieties.

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“…From Figure 1a curve 4 in the En and copper sulfate mixed solution, there is found an absorption peak at 230.5 nm. Bennett and Fleming et al [30,31] reported an absorption peak at about 228.0 nm for coordination behavior between En and cupric ion. Therefore, the absorption peak at 230.5 nm is attributed to the lone pair electrons of N atom in En undergoing n!σ* transition 5) and 20 mm En (6) for the coordination between En and cupric ion.…”

Section: Coordination Behaviors Of Cit and En To Cu (Ii) Ionmentioning

confidence: 99%

“…The positions of the four peaks above from this work are consistent with that at 1050, 1110, 1328 and 1494 cm À 1 from the previous literatures, which can be ascribed to the v(CÀ N), τ(NH 2 ), τ(CH 2 ) and δ(NH 2 ) of EnÀ Cu coordination ion. [30,31] The EnÀ Cu coordination ions begin to reduce at À 0.4 V potential, which means that the EnÀ Cu adsorbed and accumulated on the electrode surface gradually decreases. The intensity of the four characteristic peaks varies from the potential of À 0.40 V to À 1.0 V, and their wavenumbers are gradually shifted to lower wavenumber.…”

Section: In Situ Ftir Analysis On the Adsorptions Of Enà Cu And Cità ...mentioning

confidence: 99%

“…To verify the rationality of the model for THs copper electronic electroplating, three copper electroplating experiments are conducted in the bath A (0. [30,31,37,42,43] ChemElectroChem copper electroplating, and Figure 6 shows the bath throwing power values and the average coating thickness of the center and mouth of THs. The throwing power values of bath A and bath B are 64.1 % and 58.5 %.…”

Section: Ths Copper Electronic Electroplatingmentioning

confidence: 99%

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Toward Preeminent Throwing Power from a Novel Alkaline Copper Electronic Electroplating Bath with Composite Coordination Agents

Jin

Yang

et al. 2022

ChemElectroChem

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In this work, an electronic copper electroplating bath with low copper ion concentration and preeminent throwing power in through hole (TH) thickening of the printed circuit board (PCB) was successfully developed. Based upon the weak alkaline bath containing the composite complexants of citrate (Cit) and ethylenediamine (En), their synergistic effects on the preeminent bath throwing power were carefully investigated and theoretically proved. The UV‐vis spectroscopy results illustrated that En exhibited a stronger coordination ability with Cu (II) ion than citrate, and the stoichiometric coordination ratio between En and Cu (II) ion was 2 : 1. The linear sweep voltammetry (LSV) results showed that the electro‐reduction peak potential of Cit−Cu coordination ion was −0.55 V (vs. Hg/HgO), whereas that of En−Cu ion was at a more negative potential of −0.82 V. The in situ Fourier transform infrared (FTIR) spectroscopy revealed that the adsorptions of the Cit−Cu and En−Cu coordination ions were potential dependent on the copper electrode. The Cit−Cu coordination ion was easily adsorbed at the interior sites of through holes with lower over‐potential to promote the growth of copper coating. Moreover, the En−Cu coordination ion adsorbed preferably on the surface and the edge of through hole for its higher electro‐reduction overpotential, to hinder the germinating of copper nuclear. The cross‐section observation of optical microscope proved that the throwing power of novel copper electroplating bath behaved surpassingly, up to 105.8 %.

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Infrared spectra and normal coordinate analysis of bis(ethylenediamine) and bis(trimethylenediamine) complexes with copper(II)

Cited by 26 publications

References 22 publications

Dynamics of water and template molecules in the interlayer space of a layered aluminophosphate. Experimental inelastic neutron scattering spectra and molecular dynamics simulated spectra

Dynamics of water and template molecules in the interlayer space of a layered aluminophosphate. Experimental inelastic neutron scattering spectra and molecular dynamics simulated spectra

Complexed Bilayer Membranes with Novel Structural Features Formed by Single-Chain Amphiphiles

Toward Preeminent Throwing Power from a Novel Alkaline Copper Electronic Electroplating Bath with Composite Coordination Agents

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