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Dinuclear ruthenium nitrido complexes supported by an oxygen tripodal ligand.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yi, †. Xiao-Yi Ng, Ho-Yuen Cheung, Wai-man Sung, Herman H. Y. Williams, Ian D. Leung, Wa-Hung |
| Copyright Year | 2012 |
| Abstract | Dinuclear ruthenium nitrido complexes supported by the Kläui's tripodal ligand [CpCo{P(O)(OEt)(2)}(3)](-) (L(OEt)(-)) have been synthesized starting from the ruthenium(VI) nitrido precursor [L(OEt)Ru(VI)(N)Cl(2)] (1). Heating a solution of 1 in CCl(4) at reflux, followed by recrystallization from hexane under nitrogen, afforded the mixed-valence ruthenium(V)-ruthenium(IV) μ-nitrido complex [L(OEt)Cl(2)Ru(V)(μ-N)Ru(IV)Cl(2)L(OEt)] (2). The cyclic voltammogram of 2 exhibited reversible couples at 0.19 and 1.13 V versus Cp(2)Fe(+/0), which are assigned as the Ru(V)-Ru(IV)/Ru(IV)-Ru(IV) and Ru(V)-Ru(V)/Ru(V)-Ru(IV) couples, respectively. Recrystallization of 2 from Et(2)O/heptane in air yielded the diamagnetic Ru(IV)-Ru(IV) complex [H(13)O(6)][{L(OEt)Ru(IV)Cl(2)}(2)(μ-N)] ([H(13)O(6)][2]), which underwent cation exchange with n-Bu(4)NOH to give [n-Bu(4)N][2]. X-ray diffraction revealed that the complex anions in [H(13)O(6)][2] and [n-Bu(4)N][2] contain linear, symmetric Ru-N-Ru bridges. Treatment of 1 with [(η(6)-p-cymene)Ru(II)Cl(2)](2) in benzene afforded the tetranuclear ruthenium(IV) complex [L(OEt)Cl(2)Ru(IV)(μ-N)Ru(IV)(H(2)O)Cl(2)](2) (3) containing symmetric Ru(IV)-N-Ru(IV) bridges. The reaction of 1 with [Ru(II)(H)(Cl)(CO)(PCy(3))(2)] (Cy = cyclohexyl) gave the ruthenium(VI)-ruthenium(II) nitrido complex [L(OEt)Cl(2)Ru(VI)(μ-N)Ru(II)(H)Cl(CO)(PCy(3))(2)] (4). The observed short Ru(II)-N bond distance [1.915(5) Å] and high C-O stretching frequency (1985 cm(-1)) in 4 are suggestive of π interaction between Ru(II) and the nitride. |
| Starting Page | 7 |
| Ending Page | 16 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://or.nsfc.gov.cn/bitstream/00001903-5/21722/1/1000003442718.pdf |
| PubMed reference number | 22998560v1 |
| Alternate Webpage(s) | https://doi.org/10.1021/ic300638r |
| DOI | 10.1021/ic300638r |
| Journal | Inorganic chemistry |
| Volume Number | 51 |
| Issue Number | 20 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Anions Cations Cyclic GMP Cyclophosphamide Gastroesophageal reflux disease Heptanes Ligands Oxygen PersonNameUse - assigned RU 28318 Ruthenium Red n-hexane |
| Content Type | Text |
| Resource Type | Article |
