Infrared spectra of binuclear rhodium(II) complexes

Pruchnik, Florian P.; Zuber, M.; Pasternak, H.; Wajda, Katarzyna

doi:10.1016/0584-8539(78)80136-6

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…The energy of this transition is higher for 2-7 than for 1, and this we attribute to stabilization of the T & -R~ state by interaction with the T* orbitals of the unsaturated amine (12). The energy of band I has been shown previously to increase with increasing field strength of ligands coordinated along the Rh-Rh axis (I), and some limited data given in Tables 2 and 3 support further this claim.…”

Section: Resultssupporting

confidence: 68%

“…The free -OH group of the mandelate is seen at 3510 cm-'. For complexes 2-7, vsym(C02) and vasym(C02) are found in the ranges 1402-1410 and 1572-1577 cm-' , respectively; the ir data, and electronic spectral data (see below), resemble very closely those of the formate and acetate Rh2(02CR)2-(N-N)2X2 analogues, and the type of structure, based on that determined for the formato-phenanthroline-chloro complex (12), is shown diagrammatically in Fig. 1.…”

Section: Resultsmentioning

confidence: 85%

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Dimeric rhodium(II) complexes containing bridging mandelate ligands

Pruchnik¹,

James²,

Kvintovics³

1986

Can. J. Chem.

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FLORIAN PRUCHNIK, BRIAN R. JAMES, and PAL KVINTOVICS. Can. J. Chem. 64, 936 (1986).The syntheses and characterization of some dimeric rhodium(I1) complexes containing bridging mandelato ligands and a metal-metal bond are described. The compounds isolated are Rh2(02CR)4(H20)2, previously described by Shchelokov and coworkers, and derivatives of the type Rh2(02CR)2(N-N)2X2.nH20 (R = (R)-CH(OH)Ph, N-N = o-phenanthroline or 2,2'-dipyridyl, X = C1, Br, I, and n is 4, 2, or 1). A mixture of species containing both bridged acetate and mandelate was isolated also. Infrared and electronic spectral data are reported. The chloride ligands of the dimers are displaced readily by alcohols, phosphines, phosphites, and amines; the metal centre also may be reduced by alcohols, P(OEt)3, and "Bu2NH. Preliminary studies point to the conditions necessary for the rhodium@) mandelate and derivatives (phosphine or (N-N) substituted) to activate H2 for catalytic hydrogenation of olefins and ketones, including prochiral substrates. [Traduit par la revue]

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 85%

Dimeric rhodium(II) complexes containing bridging mandelate ligands

Pruchnik¹,

James²,

Kvintovics³

1986

Can. J. Chem.

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“…Dimeric rhodium(II) complexes have attracted considerable interest due to their interesting structure and reactivity [1][2][3][4][5][6][7][8][9][10], catalytic properties [1][2][3]5,[11][12][13] and anticancer activity [1][2][3]5,10,[14][15][16][17][18][19]. The structure, reactivity, catalytic properties and cytostatic activity of [4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…The structure, reactivity, catalytic properties and cytostatic activity of [4][5][6][7][8][9][10][11][12][13]. Rhodium(II) carboxylato complexes belong to the most promising platinum metals compounds having anticancer and biological activity [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Interaction of [Rh₂(O₂CCH₃)₄(H₂O)₂] and [Rh₂(O₂CCH(OH)Ph)₂(phen)₂(H₂O)₂](O₂C‐CH(OH)Ph)₂ With Sulfhydryl Compounds and Ceruloplasmin

2000

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The interaction of binuclear rhodium(lI) complexes Rh2(OOCCH3)4(H20)2], [Rh2{OOCCH(OH)Ph}2(phen)2(H20)2] {OOCCH(OH)Ph}2, [Rh2(OOCCH3)2(bpy)2(H20)2](OOCCH3)2 and [Rh2Cl2(OOCMe)2(bpy)2](3H20) with ceruloplasmin, cysteine, glutathione and coenzyme A have been investigated using UV-Vis and CD spectroscopies. The complexes containing phen or bpy at pH 7.4 and 4.0 are readily reduced with sulfhydryl compounds, while rhodium(II) acetate is relatively stable in these conditions. Complex [Rh2{OOCCH(OH)Ph}2(phen)2(H20)2] strongly changes structure of ceruloplasmin leading to the decrease of x-helix content and loss of oxidase activity.

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