13C nuclear magnetic resonance spectra of coordinated thiocyanate

Kargol, Joseph A.; Crecely, Roger W.; Burmeister, John L.

doi:10.1016/s0020-1693(00)95666-4

Cited by 20 publications

(34 citation statements)

References 17 publications

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“…1. For complex salt 1 the 13 C NMR chemical shift value (d = 119) is in good agreement with that observed for K 2 [Hg(SCN) 4 ] (d = 124) [16]. No separate signals are observed for bridging and terminal thiocyanate groups.…”

supporting

confidence: 84%

A new anion, [Hg2(SCN)7]3−: First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)6][Hg2(SCN)7]

Bala

Sharma

Kariuki

2006

Inorganic Chemistry Communications

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supporting

confidence: 84%

A new anion, [Hg2(SCN)7]3−: First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)6][Hg2(SCN)7]

Bala

Sharma

Kariuki

2006

Inorganic Chemistry Communications

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“…(3) B = various donor solvents has been suggested that V(CO)5PPh3', formed by addition of PPh3 to solutions of V(CO)6 in ether, arises by substitution of V(CO)6' after disproportionation.5 Yet other workers have shown V(CO)6~t o be inert to thermal substitution of triphenylphosphine under a variety of conditions (e.g., in molten triphenylphosphine).6 On this basis it seemed more likely that the formation of V(CO)5Ph3P' occurs via initial formation of a substituted neutral vanadium carbonyl species in ether which then disproportionates to the observed salt. 7 To test this hypothesis, we reinvestigated the V(CO)6-PPh3 reaction.…”

Section: Notesmentioning

confidence: 99%

Synthesis and properties of (triphenylphosphine)pentacarbonylvanadium(0), V(CO)5Ph3P

Ellis¹,

Faltynek²,

Rochfort³

et al. 1980

Inorg. Chem.

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“…The thiocyanate ligand in cis -Ru II (dcbpyH 2 ) 2 (NCS) 2 was found to be N-bound, determined by infrared spectroscopy , Thio- and selenocyanate ligands in Ru complexes are known in the N-, S-, and Se-bound modes and as bridging ligands for dimer complexes. − …”

Section: Introductionmentioning

confidence: 98%

Ruthenium(II) Charge-Transfer Sensitizers Containing 4,4‘-Dicarboxy-2,2‘-bipyridine. Synthesis, Properties, and Bonding Mode of Coordinated Thio- and Selenocyanates

1996

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The synthesis and properties of several complexes of Ru(II) containing 4,4′-dicarboxy-2,2′-bipyridine (dcbpyH 2 ), 2,6-bis(1-methylbenzimidazol-2-yl)pyridine (bmipy), or 2,6-bis(1-methylbenzimidazol-2-yl)-4-phenylpyridine (phbmipy), and monodentate ligands (X -) Cl -, I -, NCS -, NCSe -, CN -) are reported. The introduction of the ambident ligands X -) NCS -, NCSe -, and CNinto the coordination sphere of [Ru(bmipy)(dcbpy)I] -and cis-Ru(dcbpyH 2 ) 2 Cl 2 has been studied in situ via 1 H and 13 C NMR spectroscopy using 13 C-enriched ligands X -. Introduction of thiocyanate and selenocyanate initially yields the two possible linkage isomers in comparable amounts; prolonged reaction time converts the S-bound isomer and the Se-bound isomer to the N-bound isomers. The isoselenocyanate complex decomposes rapidly, yielding the cyano complex under loss of Se. The N-bound isothiocyanato complex K[Ru(bmipy)(dcbpy)(NCS)] was found to be an efficient sensitizer for nanocrystalline TiO 2 ; the incident monochromatic photon-to-current efficiency (IPCE) is nearly quantitative at 520 nm. Introduction of a phenyl group in the 4-position of the 2,6-bis(1-methylbenzimidazol-2-yl)pyridine ligand gives a red-shifted absorption maximum for the corresponding phenylated K[Ru(ph-bmipy)(dcbpy)(NCS)] complex with an increased molar absorption coefficient for the MLCT maximum at 508 nm. At longer wavelengths above 620 nm, phenyl substitution does not enhance the absorption coefficients of the complex. Compared to that of K[Ru(bmipy)-(dcbpy)(NCS)], the performance of the phenylated complex is reduced in a solar cell due to lower IPCE values. The visible spectra of the halide complexes K[Ru(bmipy)(dcbpy)X] (X -) Cl -, I -) show enhanced red response, but the complexes exhibit strongly reduced overall IPCE values. A comparison of the complexes to cis-Ru-(dcbpyH 2 ) 2 (NCS) 2 is presented. Possible strategies for the design of more efficient sensitizers are discussed.

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13C nuclear magnetic resonance spectra of coordinated thiocyanate

Cited by 20 publications

References 17 publications

A new anion, [Hg2(SCN)7]3−: First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)6][Hg2(SCN)7]

A new anion, [Hg2(SCN)7]3−: First synthesis, spectroscopic characterization and X-ray structure determination of [Co(NH3)6][Hg2(SCN)7]

Synthesis and properties of (triphenylphosphine)pentacarbonylvanadium(0), V(CO)5Ph3P

Ruthenium(II) Charge-Transfer Sensitizers Containing 4,4‘-Dicarboxy-2,2‘-bipyridine. Synthesis, Properties, and Bonding Mode of Coordinated Thio- and Selenocyanates

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