Spectroscopic properties and bonding character of thiocyanate ligand in some pyridine and 2,2′-dipyridyl Ru(II) mixed complexes

Wajda, S.; Rachlewicz, Krystyna

doi:10.1016/s0020-1693(00)94977-6

Cited by 15 publications

(15 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additives in an electrolyte are known to influence DSSC performance15c and the relatively high concentration of Li + and absence of 4‐ tert ‐butylpyridine in this study probably resulted in the low V oc .…”

Section: Resultsmentioning

confidence: 93%

“…The NCS − group has two characteristic modes, $\tilde \nu $ (NC) and $\tilde \nu $ (CS), which are frequently considered as a diagnostic with respect to the coordination mode of the ambidentate NCS ligand 15. The IR spectrum of complex 3 shows an intense absorbance at 2120 [$\tilde \nu $ (NC)] and 780 cm −1 [$\tilde \nu $ (CS)] due to the N‐coordinated NCS ligand.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A Simple Synthetic Route to Obtain Pure Trans‐Ruthenium(II) Complexes for Dye‐Sensitized Solar Cell Applications

et al. 2013

View full text Add to dashboard Cite

We report a facile synthetic route to obtain functionalized quaterpyridine ligand and its trans-dithiocyanato ruthenium complex, based on a microwave-assisted procedure. The ruthenium complex has been purified using a silica chromatographic column by protecting carboxylic acid groups as iso-butyl ester, which are subsequently hydrolyzed. The highly pure complex exhibits panchromatic response throughout the visible region. DFT/time-dependent DFT calculations have been performed on the ruthenium complex in solution and adsorbed onto TiO2 to analyze relative electronic and optical properties. The ruthenium complex endowed with the functionalized quaterpyridine ligand was used as a sensitizer in dye-sensitized solar cell yielding a short-circuit photocurrent density of more than 19 mA cm(-2) with a broad incident photon to current conversion efficiency spectra ranging from 400 to 900 nm, exceeding 80 % at 700 nm.

show abstract

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

A Simple Synthetic Route to Obtain Pure Trans‐Ruthenium(II) Complexes for Dye‐Sensitized Solar Cell Applications

et al. 2013

View full text Add to dashboard Cite

show abstract

“…This acid−base reaction favors the contribution of ΔH bond and corroborates the observation of a thermodynamically more stable S-bound product. 36 In the literature, there is some contradiction regarding the Ru− (NCS) 2 isomer of similar ruthenium(II) polypyridyl compounds functioning as the thermodynamic or kinetic product and depending highly on the structure of the compounds. 28,30,31,37 In the compounds investigated herein, the Ru−(NCS) 2 isomer was consistently the kinetic product.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Mechanistic Insights into the Stepwise Assembly of Ruthenium(II) Tris-heteroleptic Compounds

Müller

Polo

2018

Inorg. Chem.

View full text Add to dashboard Cite

The ruthenium(II) tris-heteroleptic compounds cis-[Ru(NN)(dcbH2)(NCS)2], NN = polypyridyl ligand and dcbH2 = 2,2′-bipyridine-4,4′-dicarboxylic acid, can be synthesized by a one-pot route starting from [Ru(p-cymene)Cl2]2, followed by the sequential addition of ligands. In this work, each synthetic step for the cis-[Ru(R-phen)(dcbH2)(NCS)2] (R = H, Me, Ph, MeO, or Cl) preparation was individually investigated, aiming to identify reaction intermediates and to establish correlations among temperature, reaction time, reactant concentration, and the identity of the substituent of the polypyridyl ligand with the kinetics of the reactions and distribution of the products. The first step is the cleavage of [Ru(p-cymene)Cl2]2, followed by the coordination of R-phen via an associative mechanism and establishment of a direct correlation between the electron-donating or electron-withdrawing character of R and the reaction rates. The second step is the conversion of [Ru(R-phen)(p-cymene)Cl]Cl to cis-[Ru(R-phen)(dcbH2)Cl2], and the rate-determining step is the formation of the intermediate [Ru(R-phen)Cl2], which exhibits a low dependence on R. The last step is the substitution of Cl– by NCS–, and the N-bound isomer is the major product. The reaction temperature, time, and identity of R influence the relative distribution of the linkage isomers. The comprehension of each of these processes is a key factor to develop new strategies to optimize the one-pot synthetic route.

show abstract

“…The observed peaks are consistent with NCS coordination through N for most of the structurally characterized transition-metal complexes. 32 The IR and 13 C NMR data (presented in NMR section) of these complexes suggest that the thiocyanate co-ordination is through the N.…”

Section: Rr and Ir Spectramentioning

confidence: 95%

Redox regulation in ruthenium(II) polypyridyl complexes and their application in solar energy conversion

Nazeeruddin¹,

Müller²,

Humphry‐Baker³

et al. 1997

J. Chem. Soc., Dalton Trans.

View full text Add to dashboard Cite

Spectroscopic properties and bonding character of thiocyanate ligand in some pyridine and 2,2′-dipyridyl Ru(II) mixed complexes

Cited by 15 publications

References 39 publications

A Simple Synthetic Route to Obtain Pure Trans‐Ruthenium(II) Complexes for Dye‐Sensitized Solar Cell Applications

A Simple Synthetic Route to Obtain Pure Trans‐Ruthenium(II) Complexes for Dye‐Sensitized Solar Cell Applications

Mechanistic Insights into the Stepwise Assembly of Ruthenium(II) Tris-heteroleptic Compounds

Redox regulation in ruthenium(II) polypyridyl complexes and their application in solar energy conversion

Contact Info

Product

Resources

About