(OC-6-14)-(7-Azaindole)dichloro(ethoxo)oxo(triphenylphosphine)rhenium(V)

Lebuis, Anne‐Marie; Beachamp, A.L.

doi:10.1107/s0108270193011734

Cited by 10 publications

(2 citation statements)

References 16 publications

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“…In compound 5 the Re-N and Re-P bond lengths of 2.219(5) and of 2.432(1) Å, respectively, compare well with those of 2.185 (7) ReO(OEt)Cl 2 (PPh 3 )(7-azaindole) complex. 15 The former distance is affected by the trans influence of the phosphine and is therefore longer than the Re-N distances detected in 3 (2.10(2), and 2.15(2) Å) and in ReO(OEt)Cl 2 (py) 2 (2.144(7) and 2.132(7) Å), 6 where the N-bases are trans to each other. The values of the bond angle at the oxygen atom in the ethoxy group (150(1)Њ in 3 and 146.1(6)Њ in 5) are close to those detected in other complexes containing the same ligand.…”

Section: Synthesis and Solid State Structuresmentioning

confidence: 91%

“…Some authors suggested that a partial multiple character for the Re-O bond may account for this unusual large value, although steric requirements are not to be excluded. 6, 15 Treatment of mer-ReCl 3 O(Me 2 S)(OPPh 3 ) with a large excess of pyz in refluxing methanol/water led to the isolation of the dioxo complex [trans-ReO 2 (pyz) 4 ]Cl 6 (Scheme 1); a similar procedure, using ReOCl 3 (PPh 3 ) 2 as precursor, has been reported for the synthesis of the py analog. 3 Compound 6 however contains four HCl molecules of crystallization, which very likely protonate the uncoordinated terminus of each pyz ligand.…”

Section: Synthesis and Solid State Structuresmentioning

confidence: 92%

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Complexed bridging ligands: oxorhenium(V) compounds with mono-coordinated pyrazine or pyrimidine as possible building blocks for the construction of polynuclear architectures †

Iengo

Zangrando

Mestroni

et al. 2001

J. Chem. Soc., Dalton Trans.

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Section: Synthesis and Solid State Structuresmentioning

confidence: 91%

Section: Synthesis and Solid State Structuresmentioning

confidence: 92%

Complexed bridging ligands: oxorhenium(V) compounds with mono-coordinated pyrazine or pyrimidine as possible building blocks for the construction of polynuclear architectures †

Iengo

Zangrando

Mestroni

et al. 2001

J. Chem. Soc., Dalton Trans.

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Rhenium(IV) and rhenium(V) complexes with 3,5-dimethylpyrazole

et al. 2006

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Mono and dinuclear Re IV and Re V complexes with 3,5 dimethylpyrazole (Me 2 pzH) were synthesized. The cis [Re 2 O 3 Cl 4 (3,5 Me 2 pzH) 4 ] complex (cis 1) was prepared by the reaction of NH 4 ReO 4 with K[HB(Me 2 pz) 3 ] in concentrated HCl or by refluxing of [ReCl 3 (MeCN)(PPh 3 ) 2 ] with Me 2 pzH in air. The bromide complex trans [Re 2 O 3 Br 4 (3,5 Me 2 pzH) 4 ] (trans 2) was synthesized by passing dry HBr through a solution of [Re 2 O 3 Br 2 (µ 3,5 Me 2 pz) 2 (3,5 Me 2 pzH) 2 ] (4) in chloroform. The pyrazolate bridged complex [Re 2 O 3 Cl 2 (µ 3,5 Me 2 pz) 2 (3,5 Me 2 pzH) 2 ] (3) was prepared from (Et 4 N) 2 [ReOCl 5 ] or Cs 2 [ReOCl 5 ] and Me 2 pzH. The corresponding bromide and iodide complexes [Re 2 O 3 X 2 (3,5 Me 2 pz) 2 (3,5 Me 2 pzH) 2 ]•C 6 H 6 (X = Br (4) or I (5)) were synthesized by the reactions of (NH 4 ) 2 [ReBr 6 ] or K 2 [ReI 6 ], respectively, with Me 2 pzH. The [ReO(OMe)(3,5 Me 2 pzH) 4 ]Br 2 • •3,5 Me 2 pzH•4H 2 O complex (6) was obtained as a by product in the synthesis of complex 4. The reaction of [ReNCl 2 (PPh 3 ) 2 ] with Me 2 pzH was accompanied by hydrolytic denitration giving rise to the mixed ligand complex [Re 2 O 3 Cl 2 (µ 3,5 Me 2 pz) 2 (3,5 Me 2 pzH)(PPh 3 )] (7). The reaction of (NH 4 ) 2 [ReBr 6 ] with a Me 2 pzH melt gave the trans [ReBr 4 (3,5 Me 2 pzH) 2 ]• •Me 2 CO complex (8). The structures of complexes 2 and 4-8 were established by X ray diffraction. All compounds were characterized by elemental analysis, electronic absorption spectroscopy, 1 H NMR and IR spectroscopy, mass spectrometry, and cyclic voltammetry.

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