FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2077826972> ?p ?o ?g. }

• W2077826972 endingPage "1596" @default.
• W2077826972 startingPage "1589" @default.
• W2077826972 abstract "Thermal decarbonylation (toluene, 111 °C) of the complexes [WFe2(µ3-CR)(µ-H)(µ-PR′2)(CO)7(η-C5H5)][R = C6H4Me-4,R′= Ph (2) or Et (3)] gives good yields of the co-ordinatively unsaturated, 46 cluster valence electron derivatives [WFe2(µ3-CR)(µ-H)(µ-PR2′)(CO)6(η-C5H5)][R′= Ph (4) or Et (5)]. The structure of the µ-PPh2 complex (4) was established by a single-crystal X-ray diffraction study and consists of a WFe2 triangle of metal atoms [W–Fe(1) 2.817(1), W–Fe(2) 2.523(1), and Fe(1)–Fe(2) 2.569(1)Å] capped by a µ3-CC6H4Me-4 group. The W–Fe(2) bond is bridged by a µ-PPh2 ligand [W-µ–P 2.357(1), Fe(2)-µ–P 2.219(1)Å] whilst a hydride ligand, which was located and refined, bridges the homonuclear Fe–Fe bond [Fe(1)–H(1) 1.73(4), Fe(2)-H(1) 1.54(6)Å]. The tungsten atom carries a cyclopentadienyl ring and a terminal CO ligand. The Fe(2) centre bound to phosphorus has two terminal CO ligands, whilst the remaining Fe(1) atom has three approximately orthogonal terminal CO groups. The µ-PPh2 bridged W–Fe(2) separation of 2.523(1)Å is extremely short. This suggests the presence of appreciable multiple-bond character in the W–Fe(2) bond which is consistent with the formulation of (4) as a co-ordinatively unsaturated complex. Spectroscopic data for complexes (4) and (5) reveal that in solution the hydride ligand adopts a terminal site on the Fe(1) atom. This contrasts with the bridging Fe(µ-H)Fe interaction observed in the solid state for (4). Solutions of (4) and (5) react with CO (15 min, 20 °C) to regenerate their saturated precursors (2) and (3) respectively. Dichloromethane solutions of (4) and (5) also react with alkynes (R″CCR″, R″= Me, Et, or Ph) to give the vinylacyl complexes [WFe2(µ3-CR){µ-C(O)C(R″)CHR″}(µ-PR2′)(CO)5(η-C5H5)][R′= Ph, R″= Me (6a), Et (6b), or Ph (6c); R′= Et, R″= Me (7)]. The molecular structure of the but-2-yne derivative (7) was established by a single crystal X-ray diffraction study. The structure consists of a WFe2 triangle of metal atoms [W–Fe(1) 2.808(1), W–Fe(2) 2.679(1), and Fe(1)–Fe(2) 2.673(1)Å] capped by a µ3-alkylidyne ligand. One W–Fe bond is bridged by a µ-PEt2 ligand whilst the remaining W-Fe bond is bridged by a µ-C(O)C(Me)CHMe group which has been formed by coupling of hydride, but-2-yne, and CO ligands. The cis-{µ-C(O)C(Me)CHMe} ligand adopts a π-allyl η3-bonding mode to Fe(2)[Fe(2)–C(O) 2.083(5), Fe(2)–C(Me) 2.173(6), and Fe(2)–CHMe 2.186(6)Å], and the C(O) end of the chain uses an orthogonal set of orbitals to η2 bond to the W atom [W–C(O) 2.011 (5), W–O 2.281 (4)Å]. Protonation of the complexes (6a) and (7)(CH2Cl2, HBF4·Et2O) occurs at the oxygen atom of the cis-{µ-C(O)C(Me)CHMe} ligand affording the unsaturated µ-allylidene derivatives [WFe2(µ3-CR){µ-C(OH)C(Me)CHMe}(µ-PR′2)(CO)5(η-C5H5)][BF4][R′= Ph (8) or Et (9)]. The spectroscopic data (i.r. and 1H, 13C-{1H}, and 31P-{1H} n.m.r.) for the new WFe2 complexes are discussed and mechanisms are proposed to account for their formation." @default.
• W2077826972 created "2016-06-24" @default.
• W2077826972 creator A5004769912 @default.
• W2077826972 creator A5043035490 @default.
• W2077826972 date "1990-01-01" @default.
• W2077826972 modified "2023-10-18" @default.
• W2077826972 title "Synthesis and reactions of co-ordinatively unsaturated µ₃-alkylidyne clusters; X-ray crystal structures of the phosphido bridged complexes [WFe₂(µ₃-CR)(µ-H)(µ-PPh₂)(CO)₆(η-C₅H₅)]and[WFe₂(µ₃-CR){µ-C(O)C(Me)CHMe}(µ-PEt₂)(CO)₅(η-C₅H₅)](R = C₆H₄Me-4)" @default.
• W2077826972 cites W1553923389 @default.
• W2077826972 cites W1554425638 @default.
• W2077826972 cites W1879706202 @default.
• W2077826972 cites W1964979003 @default.
• W2077826972 cites W1965528923 @default.
• W2077826972 cites W1974250981 @default.
• W2077826972 cites W1975466962 @default.
• W2077826972 cites W1977041346 @default.
• W2077826972 cites W1981946429 @default.
• W2077826972 cites W1982428685 @default.
• W2077826972 cites W1991233903 @default.
• W2077826972 cites W2008612774 @default.
• W2077826972 cites W2027738260 @default.
• W2077826972 cites W2036062080 @default.
• W2077826972 cites W2037739478 @default.
• W2077826972 cites W2037793288 @default.
• W2077826972 cites W2039385200 @default.
• W2077826972 cites W2041318935 @default.
• W2077826972 cites W2051328449 @default.
• W2077826972 cites W2065968821 @default.
• W2077826972 cites W2072889478 @default.
• W2077826972 cites W2072937678 @default.
• W2077826972 cites W2074478207 @default.
• W2077826972 cites W2074910064 @default.
• W2077826972 cites W2084001214 @default.
• W2077826972 cites W2091897417 @default.
• W2077826972 cites W2156317848 @default.
• W2077826972 cites W3136058657 @default.
• W2077826972 cites W4251001577 @default.
• W2077826972 cites W4254387747 @default.
• W2077826972 doi "https://doi.org/10.1039/dt9900001589" @default.
• W2077826972 hasPublicationYear "1990" @default.
• W2077826972 type Work @default.
• W2077826972 sameAs 2077826972 @default.
• W2077826972 citedByCount "8" @default.
• W2077826972 countsByYear W20778269722013 @default.
• W2077826972 countsByYear W20778269722020 @default.
• W2077826972 crossrefType "journal-article" @default.
• W2077826972 hasAuthorship W2077826972A5004769912 @default.
• W2077826972 hasAuthorship W2077826972A5043035490 @default.
• W2077826972 hasConcept C115624301 @default.
• W2077826972 hasConcept C116569031 @default.
• W2077826972 hasConcept C132190689 @default.
• W2077826972 hasConcept C155860418 @default.
• W2077826972 hasConcept C161790260 @default.
• W2077826972 hasConcept C170493617 @default.
• W2077826972 hasConcept C178790620 @default.
• W2077826972 hasConcept C181458950 @default.
• W2077826972 hasConcept C185592680 @default.
• W2077826972 hasConcept C2777164566 @default.
• W2077826972 hasConcept C2777961443 @default.
• W2077826972 hasConcept C2780696404 @default.
• W2077826972 hasConcept C544153396 @default.
• W2077826972 hasConcept C55493867 @default.
• W2077826972 hasConcept C71240020 @default.
• W2077826972 hasConcept C8010536 @default.
• W2077826972 hasConceptScore W2077826972C115624301 @default.
• W2077826972 hasConceptScore W2077826972C116569031 @default.
• W2077826972 hasConceptScore W2077826972C132190689 @default.
• W2077826972 hasConceptScore W2077826972C155860418 @default.
• W2077826972 hasConceptScore W2077826972C161790260 @default.
• W2077826972 hasConceptScore W2077826972C170493617 @default.
• W2077826972 hasConceptScore W2077826972C178790620 @default.
• W2077826972 hasConceptScore W2077826972C181458950 @default.
• W2077826972 hasConceptScore W2077826972C185592680 @default.
• W2077826972 hasConceptScore W2077826972C2777164566 @default.
• W2077826972 hasConceptScore W2077826972C2777961443 @default.
• W2077826972 hasConceptScore W2077826972C2780696404 @default.
• W2077826972 hasConceptScore W2077826972C544153396 @default.
• W2077826972 hasConceptScore W2077826972C55493867 @default.
• W2077826972 hasConceptScore W2077826972C71240020 @default.
• W2077826972 hasConceptScore W2077826972C8010536 @default.
• W2077826972 hasIssue "5" @default.
• W2077826972 hasLocation W20778269721 @default.
• W2077826972 hasOpenAccess W2077826972 @default.
• W2077826972 hasPrimaryLocation W20778269721 @default.
• W2077826972 hasRelatedWork W15120608 @default.
• W2077826972 hasRelatedWork W1922949697 @default.
• W2077826972 hasRelatedWork W1981977096 @default.
• W2077826972 hasRelatedWork W1985165372 @default.
• W2077826972 hasRelatedWork W1989721334 @default.
• W2077826972 hasRelatedWork W1990597544 @default.
• W2077826972 hasRelatedWork W2080734426 @default.
• W2077826972 hasRelatedWork W2086572664 @default.
• W2077826972 hasRelatedWork W2088319894 @default.
• W2077826972 hasRelatedWork W2088926003 @default.
• W2077826972 isParatext "false" @default.
• W2077826972 isRetracted "false" @default.
• W2077826972 magId "2077826972" @default.
• W2077826972 workType "article" @default.