New ruthenium(<scp>III</scp>) and ruthenium(<scp>II</scp>) complexes containing triphenyl-arsine and -phosphine and other ligands

Ruiz-Ramı̀rez, Lena; Stephenson, T. A.; Switkes, Ellen S.

doi:10.1039/dt9730001770

Cited by 66 publications

(14 citation statements)

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“…The main band at 532 nm can be related to the transition from the chlorine orbitals to the metal [pπ (Cl -)→ dπ (Ru III )]. 42 The spectrum is similar to that observed for the d 5 ruthenium(III) compounds containing PPh 3 , N-donors (pyridine, bipyridine, or phenanthroline), and Cl -ligands, 43,44 and this spectrum corresponds closely to that of complex [RuCl 3 (dppb)L] (L= pyridine) (see inset shown in Figure 3). …”

Section: Spectroscopic Characterizationsupporting

confidence: 54%

A novel binuclear ruthenium complex: spectroscopic and electrochemical characterization, and formation of Langmuir and Langmuir-Blodgett films

Wohnrath

Santos

Sandrino

et al. 2006

J. Braz. Chem. Soc.

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O complexo [{RuCl 3 (dppb)} 2 (µ-4,4'-bipy)] (dppb = PPh 2 (CH 2 ) 4 PPh 2 ; 4,4'-bipy= 4,4'-bipiridil) foi obtido por meio da reação entre 4,4'-bipiridina e mer- [RuCl 3 (dppb)] . H 2 O, em bom rendimento. As características do complexo binuclear obtido, estudadas por medidas de FT-IR, UV-Vis, EPR e análise elementar foram similares às do complexo [RuCl 3 (dppb)L] (L= N-heterociclo).[{RuCl 3 (dppb)} 2 (µ-4,4'-bipy)] é solúvel em solventes fracamente polares, facilitando a sua utilização para produzir filmes de Langmuir e Langmuir-Blodgett (LB). Enquanto que filmes cast e o complexo em solução são vermelhos, filmes LB são azul-esverdeados, provavelmente devido à oxidação da bisfosfina. A natureza nanoestruturada dos filmes LB, se manifestou nas medidas eletroquímicas, já que estes filmes exibem maior corrente de pico do que os filmes cast e dipcoated. As respostas eletroquímicas destes filmes são caracterizadas pelo processo Ru [{RuCl 3 (dppb)} 2 (µ-4,4'-bipy)] was prepared from the reaction of the 4,4'-bipyridine and mer-[RuCl 3 (dppb)] . H 2 O, in good yield. The characteristics of the binuclear complex studied with FT-IR, UV-Vis, EPR and elemental analysis were similar to those of the [RuCl 3 (dppb)L] (L= Nheterocycle). [{RuCl 3 (dppb)} 2 (µ-4,4'-bipy)] is soluble in weakly polar organic solvents, facilitating its use in the production of Langmuir and Langmuir-Blodgett (LB) films production. While the cast films and the complex in solution were red, the LB films were green-bluish, probably due to oxidation of the bisphosphine. The nanostructured nature of the LB films was manifested in electrochemical measurements, as these films exhibited higher peak currents than cast or dipcoated films. For all films, the electrochemical response was dominated by the Ru III Ru III /Ru II Ru II process, which differed from that of the binuclear compound. For the latter, an irreversible process appeared due to formation of new species. The electroactivity of LB films from [{RuCl 3 (dppb)} 2 (µ-4,4'-bipy)] also pointed to their possible use in electrochemical devices.

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Section: Spectroscopic Characterizationsupporting

confidence: 54%

A novel binuclear ruthenium complex: spectroscopic and electrochemical characterization, and formation of Langmuir and Langmuir-Blodgett films

Wohnrath

Santos

Sandrino

et al. 2006

J. Braz. Chem. Soc.

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“…Several 1.9 (7) -21 (6) N (3) 0.2700 (5) 0.1179 (4) 0.1429 (6) 11.9 (8) 65 (5) 16 (1) -9 (5) 4.6 (7) -43 (6) C (1) 0.1336 (7) 0.3496 (6) 0.0068 (9) 10 (1) 97 (7) 17 (1) 12 (7) O(1) -24 (8) C (2) 0.1630 (8) 0.2065 (6) -0.0313 (8) 13 (1) 113 (8) 16 (1) -4 (7) l ( 1 ) -56 (8) C (3) 0.1681 (7) 0.0689 (6) 0.3143 (8) 14 (1) 75 (7) 19 (1) -24 (7) 7 (1) -37 (8) C (4) 0.2810 (8) 0,0911 (5) 0.5049 (8) 16 (1) 66 (6) 18 (1) -6 (7) 7 (1) -8 (8) C (5) 0.2642 (7) 0.3467 (5) 0.4455 (8) 13 (1) 73 (6) 17 (1) 3 (7) 3 (1) -49 (8) C (6) 0.3015 (8) 0.4625 (5) 0.2739 (8) 13 (1) 63 (6) 20 (1) 10 (7) l ( 1 ) …”

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Molecular structure of dichloro(1,4,7-triazacyclononane)copper(II), a macrocyclic triamine complex with an unusually small formation constant

Schwindinger¹,

Fawcett²,

Lalancette³

et al. 1980

Inorg. Chem.

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The title complex, Cu ( [9]aneN3)C12 (l), behaves anomalously with regard to the well-known macrocyclic effect. Typically, macrocyclic pol amine Cu(I1) complexes exhibit polyamines.2 However, the formation constant of 1 (log K is: 16) is smaller than that of Cu(dien)z+ (log K = 18.0).*g3 larger formation constants yh t an those of corresponding linear dien 19 lane% In contrast, formation constants of Ni( [9]aneN#+ and Zn-([9]a11eN~)~' (log K = 16.2 and 11.6, respectively) are substantially larger than those of Ni(dien)2+ and Zn(dien)" (log K = 10.7 and 8.9, re~pectively).~ The anomalous behavior of 1 has been attributed2" to steric requirements of Cu(I1) which have been frustrated in part by structural constraints of the [9]aneN3 ligand. The present study was undertaken to help understand these constraint^.^ Experimental SectionPreparation of 1. 1,4,7-Triazacyclononane trihydrochloride ( [9]aneN3.3HC1) was prepared by appropriate modification of a published procedure for 1,5,9,13-tetraazacy~lohexadecane.~ Evaporation of a solution of [9]aneN3.3HC1 (5 mmol, 1.24 g), CuC12 (5 mmol, 0.85 g), and 15 mL of 1 N sodium hydroxide yielded sodium chloride crystals and large blue plates of 1 which were separated manually and recrystallized from water to yield pure 1.

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“…In this paper we have reported the photolytic insertion of CS 2 into Mo Á/acetylide bond to give two types of co-ordinated S 2 C Ã/C Å/CPh ligands; one is the h 2 -bonding mode and the second, the rather rare h 3 -bonding mode [13 Á/22]. We observe that the (h 2 -S 2 C Ã/C Å/CPh) can be transformed to (h 3 -S 2 C Ã/C Å/CPh) ligand by two different pathways: by oxidation at the metal atom or by addition of electron-withdrawing metal carbonyl groups to the S atoms of the (h 2…”

Section: Resultsmentioning

confidence: 98%

Insertion of CS2 into a metal acetylide bond and conversion of the bonding mode of S2CCCPh from η2 to η3

Mathur

Ghosh

Mukhopadhyay

et al. 2003

Journal of Organometallic Chemistry

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New ruthenium(III) and ruthenium(II) complexes containing triphenyl-arsine and -phosphine and other ligands

Cited by 66 publications

References 0 publications

A novel binuclear ruthenium complex: spectroscopic and electrochemical characterization, and formation of Langmuir and Langmuir-Blodgett films

A novel binuclear ruthenium complex: spectroscopic and electrochemical characterization, and formation of Langmuir and Langmuir-Blodgett films

Molecular structure of dichloro(1,4,7-triazacyclononane)copper(II), a macrocyclic triamine complex with an unusually small formation constant

Insertion of CS2 into a metal acetylide bond and conversion of the bonding mode of S2CCCPh from η2 to η3

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