Syntheses and structural characterization of rhenium-bis-hydrazinopyrimidine core complexes with thiolate and Schiff base coligands

Femia, Frank J.; Chen, Xiaoyuan; Maresca, Kevin P.; Babich, John W.; Zubieta, Jon

doi:10.1016/s0020-1693(00)00287-5

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…Hence, the benzoyldiazenide ligand acts as a 3-electron donor (if considered in the neutral form a) or as a 4-electron donor (negatively charged form) [26], thus giving an 18-electron configuration to the complex. A similar coordination mode is known for a variety of organodiazenide rhenium complexes [11c, [27][28][29][30]. The average Re-Cl bond distance in compound 1 [2.4208 (19) Å ] is longer than that found in complex 3 (9) Bond angles Cl(1)-Re-Cl (2) 88.31 (6) Cl (1)-Re-Cl (2) 92.52 (14) Cl(1)-Re-P(1) 90.29 (5) Cl (1)-Re-P(1) 97.21(15) Cl(1)-Re-P (2) 89.45 (5) Cl (1) There is an intramolecular H bond N12-H12Á Á ÁO1 (H12Á Á ÁO1, 1.938 Å ) in 1 which implies the coplanarity of both the pyrazolyl and the organodiazenide groups.…”

Section: Solid State Structuressupporting

confidence: 55%

Syntheses and properties of Re(III) complexes derived from hydrotris(1-pyrazolyl)methanes: molecular structure of [ReCl2(HCpz3)(PPh3)][BF4]

Alegria¹,

Martins²,

Silva

et al. 2005

Journal of Organometallic Chemistry

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Section: Solid State Structuressupporting

confidence: 55%

Syntheses and properties of Re(III) complexes derived from hydrotris(1-pyrazolyl)methanes: molecular structure of [ReCl2(HCpz3)(PPh3)][BF4]

Alegria¹,

Martins²,

Silva

et al. 2005

Journal of Organometallic Chemistry

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“…Ligand L is a general Lewis base, PAr 3 , pyridine, tetramethylthiourea, R 2 S, and so forth, and the dt ligands include 1,2-ethanedithiolate (edt), 1,3-propanedithiolate (pdt), and mtp, the dianion of 2-(mercaptomethyl)thiophenol. Compounds lacking a Me−Re bond include [(ReO) 2 (mtp) 3 ] and others that have been described by Zubieta and et al − and Abu-Omar et al − Both monomers and, especially, dimers catalyze OAT reactions, ,,− YO + X → Y + XO, for which combinations of YO (e.g., C 5 H 5 NO, tert -BuOOH, R 2 SO) have been used, their reaction partners X being, for example, PAr 3 , R 2 S, and R 2 SO.…”

Section: Introductionmentioning

confidence: 99%

Rhenium(V) Complexes with Thiolato and Dithiolato Ligands: Synthesis, Structures, and Monomerization Reactions

Ellern

Espenson

2005

Inorg. Chem.

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The new compound {(PhS)(2)ReO(mu-SPh)}(2), 1, was synthesized from Re(2)O(7) and PhSH and then used as the synthon for a number of hitherto unknown oxorhenium(V) compounds. Reactions between dithiols and 1 (2:1 ratio) afford {PhSReO(dt)}(2), where the dithiols, dtH(2), are 1,2-ethanedithiol (edtH(2)), 1,3-propanedithiol (pdtH(2)), 1,3-butanedithiol (pdtMeH(2)), 1,2-benzenedithiol (bdtH(2)), 2-(mercaptomethyl)thiophenol (mtpH(2)), and 2-mercaptoethyl sulfide (mesH(2)). Similar reactions carried out with a 3:1 ratio of dtH(2) to 1 afford [(ReO)(2)(dt)(3)], dt = edt, pdt. When NEt(3) was introduced prior to the 3:1 reaction between edtH(2) and 1, a compound containing an anionic complex was isolated, [PPh(4)][ReO(edt)(2)]. The new compounds were characterized analytically, spectroscopically, and crystallographically. The Re-O groups in two of the compounds, 1 and {ReO(mu-SPh)(bdt)}(2), exist in rare anti orientations; the others adopt the more familiar syn geometry, as discussed. Selected monomerization reactions of {PhSReO(dt)}(2) were also carried out: {PhSReO(dt)}(2) + 2L = 2[PhSReO(dt)L]. The rate for L = 4-phenylpyridine is given by v = {k(a)[L] + k(b)[L](2)} x [{PhSReO(dt)}(2)], as it is for the reactions of {MeReO(dt)}(2); for all of these compounds, the reaction proceeds nearly entirely by the third-order pathway. Values of k(b)/L(2) mol(-2) s(-1) at 25.0 degrees C are 5.8 x 10(2) (mtp), 2.97 x 10(3) (pdt), 4.62 x 10(5) (edt), and 3.87 x 10(5) (bdt). The rate law for the reactions of {PhSReO(dt)}(2) with L = PAr(3) is v = k(a)[L]/{1 + kappa[L]} x [{PhSReO(dt)}(2)]. For PPh(3), values at 25.0 degrees C of k(a)/L mol(-1) s(-1) (kappa/L mol(-1)) for {PhSReO(dt)}(2) are 9.64 x 10(-2) (1.87) for mtp, 3.43 x 10(-2) (0.492) for pdt, 1.91 (1.42) for edt, 1.84 x 10(-2) (0.82) for bdt, and 1.14 x 10(3) (10.6) for 1. Mechanisms are proposed that are consistent with the data obtained and with earlier work.

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Rhenium(III) and technetium(III) complexes with 2-mercapto-1,3-azole ligands and X-ray crystal structures

Marchesi

Marchi

Marvelli

et al. 2005

Inorganica Chimica Acta

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Syntheses and structural characterization of rhenium-bis-hydrazinopyrimidine core complexes with thiolate and Schiff base coligands

Cited by 9 publications

References 19 publications

Syntheses and properties of Re(III) complexes derived from hydrotris(1-pyrazolyl)methanes: molecular structure of [ReCl2(HCpz3)(PPh3)][BF4]

Syntheses and properties of Re(III) complexes derived from hydrotris(1-pyrazolyl)methanes: molecular structure of [ReCl2(HCpz3)(PPh3)][BF4]

Rhenium(V) Complexes with Thiolato and Dithiolato Ligands: Synthesis, Structures, and Monomerization Reactions

Rhenium(III) and technetium(III) complexes with 2-mercapto-1,3-azole ligands and X-ray crystal structures

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