REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)]
The complexes [Mo(NO){HB(Me2pz)3}{OCH2(CH2OCH 2)nCH2O}] (n = 2-5; HB(Me2pz)3- = hydrotris(3,5-dimethylpyrazolyl)borate) have been synthesized and characterized by spectroscopic methods. All contain the redox-active {Mo(NO)}3+ moiety incorporated in an unusually large chelate ring which forms a cycli...
| Những tác giả chính: | , , , , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
1992
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| _version_ | 1826275730996068352 |
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| author | Alobaidi, N Salam, S Beer, P Bush, C Hamor, T Mcquillan, F Jones, C Mccleverty, J |
| author_facet | Alobaidi, N Salam, S Beer, P Bush, C Hamor, T Mcquillan, F Jones, C Mccleverty, J |
| author_sort | Alobaidi, N |
| collection | OXFORD |
| description | The complexes [Mo(NO){HB(Me2pz)3}{OCH2(CH2OCH 2)nCH2O}] (n = 2-5; HB(Me2pz)3- = hydrotris(3,5-dimethylpyrazolyl)borate) have been synthesized and characterized by spectroscopic methods. All contain the redox-active {Mo(NO)}3+ moiety incorporated in an unusually large chelate ring which forms a cyclic polyether structure. Cyclic voltammetric studies of these compounds reveal a reduction process at ca. -1.3 V (SCE) which is shifted to more anodic potentials in the presence of an equimolar concentration of sodium ions. At higher concentrations, decomposition is associated with the reduction process. In the case where n = 3, 1:1 complexes with Li+, Na+, and K+ have been isolated. The molecular structure of [Mo(NO){HB-(Me2pz)3}{OCH2(CH 2OCH2)3CH2O}] has been determined by X-ray diffraction methods. The compound crystallizes in the orthorhombic space group Pbca (No. 61) with eight molecules in a cell of dimensions a = 16.937 (3), b = 15.143 (4), and c = 22.034 (8) Å. Full-matrix least-squares refinement gives final R, Rw on F of 0.051, 0.079 for 3063 observed [F > 5σ(F)] data. This structure confirms the presence of a 14-membered chelate ring (Mo-O = 1.903 (4) and 1.910 (4) Å; O-Mo-O = 101.0 (2)°) and a linear nitric oxide ligand (Mo-N-O = 177.9 (5)°; N-O = 1.190 (6) Å). The cyclic polyether ring is extended away from the bulky HB(Me2pz)3 ligand. © 1992 American Chemical Society. |
| first_indexed | 2024-03-06T23:03:14Z |
| format | Journal article |
| id | oxford-uuid:62e5ed4e-ebda-45ed-8c1d-b30d18a895dc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:03:14Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:62e5ed4e-ebda-45ed-8c1d-b30d18a895dc2022-03-26T18:09:19ZREDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)]Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:62e5ed4e-ebda-45ed-8c1d-b30d18a895dcEnglishSymplectic Elements at Oxford1992Alobaidi, NSalam, SBeer, PBush, CHamor, TMcquillan, FJones, CMccleverty, JThe complexes [Mo(NO){HB(Me2pz)3}{OCH2(CH2OCH 2)nCH2O}] (n = 2-5; HB(Me2pz)3- = hydrotris(3,5-dimethylpyrazolyl)borate) have been synthesized and characterized by spectroscopic methods. All contain the redox-active {Mo(NO)}3+ moiety incorporated in an unusually large chelate ring which forms a cyclic polyether structure. Cyclic voltammetric studies of these compounds reveal a reduction process at ca. -1.3 V (SCE) which is shifted to more anodic potentials in the presence of an equimolar concentration of sodium ions. At higher concentrations, decomposition is associated with the reduction process. In the case where n = 3, 1:1 complexes with Li+, Na+, and K+ have been isolated. The molecular structure of [Mo(NO){HB-(Me2pz)3}{OCH2(CH 2OCH2)3CH2O}] has been determined by X-ray diffraction methods. The compound crystallizes in the orthorhombic space group Pbca (No. 61) with eight molecules in a cell of dimensions a = 16.937 (3), b = 15.143 (4), and c = 22.034 (8) Å. Full-matrix least-squares refinement gives final R, Rw on F of 0.051, 0.079 for 3063 observed [F > 5σ(F)] data. This structure confirms the presence of a 14-membered chelate ring (Mo-O = 1.903 (4) and 1.910 (4) Å; O-Mo-O = 101.0 (2)°) and a linear nitric oxide ligand (Mo-N-O = 177.9 (5)°; N-O = 1.190 (6) Å). The cyclic polyether ring is extended away from the bulky HB(Me2pz)3 ligand. © 1992 American Chemical Society. |
| spellingShingle | Alobaidi, N Salam, S Beer, P Bush, C Hamor, T Mcquillan, F Jones, C Mccleverty, J REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title | REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title_full | REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title_fullStr | REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title_full_unstemmed | REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title_short | REDOX-RESPONSIVE MOLYBDENUM MONONITROSYL COMPLEXES INCORPORATING CYCLIC POLYETHER CATION BINDING-SITES AND X-RAY CRYSTAL-STRUCTURE OF [MO(NO)(HB(3,5-ME2C3N2H)3)(OCH2(CH2OCH2)3CH2O)] |
| title_sort | redox responsive molybdenum mononitrosyl complexes incorporating cyclic polyether cation binding sites and x ray crystal structure of mo no hb 3 5 me2c3n2h 3 och2 ch2och2 3ch2o |
| work_keys_str_mv | AT alobaidin redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT salams redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT beerp redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT bushc redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT hamort redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT mcquillanf redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT jonesc redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o AT mcclevertyj redoxresponsivemolybdenummononitrosylcomplexesincorporatingcyclicpolyethercationbindingsitesandxraycrystalstructureofmonohb35me2c3n2h3och2ch2och23ch2o |