Synthesis, spectroscopic and structural characterisation of molybdenum, tungsten and manganese carbonyl complexes of tetrathio- and tetraseleno-ether ligands

Levason, William; Ollivere, Luke P.; Reid, Gillian; Tsoureas, Nikolaos; Webster, Michael

doi:10.1016/j.jorganchem.2009.03.041

Cited by 23 publications

(28 citation statements)

References 19 publications

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“…Mass spectra were obtained using a VG Biotech platform. Microanalyses were undertaken by Medac Ltd. Electrochemical measurements were undertaken using an Ecochemie PGStat20 with 0.1 mol dm À3 [NBu 4 ][BF 4 ] in dry MeCN as electrolyte. All preparations were carried out under a N 2 atmosphere.…”

Section: Methodsmentioning

confidence: 99%

“…(CH 2 ) 2 C (CH 2 SeMe) 2 [4], [Mn(CO) 5 Cl] [7], [{RuCl 2 (g 6 -p-cymene)} 2 ] and [{OsCl 2 (g 6 -p-cymene)} 2 ] [8] were made by literature methods.…”

Section: Methodsmentioning

confidence: 99%

“…We recently reported [4] that the reaction of MeSeLi with C(CH 2 Br) 4 produces C(CH 2 SeMe) 4 when the molar ratio of the reactants is 4.5:1, whilst increasing the amount of MeSeLi, progressively forms (CH 2 ) 2 C(CH 2 SeMe) 2 , the yield being $90% with an 8:1 molar ratio. We have now re-examined the corresponding reactions of MeTeLi with C(CH 2 Br) 4 , which was reported [5] to give only (CH 2 ) 2 C(CH 2 TeMe) 2 , to establish whether the tetratelluroether, C(CH 2 TeMe) 4 , could be obtained.…”

Section: Synthesis Of the Telluroether And Organotellurium(iv) Derivamentioning

confidence: 99%

“…They also exhibit ready oxidation at the heteroatom, and cleavage of the weaker and more reactive E-C bonds, properties less commonly found with thioethers [1][2][3]. We recently reported the synthesis and some metal carbonyl complexes of the tetradentates 1,2,4,5-C 6 H 2 (CH 2 EMe) 4 (E = S or Se) and C(CH 2 EMe) 4 [4], and found that when E = Se, the reaction of MeSeLi with C(CH 2 Br) 4 produces either C(CH 2 SeMe) 4 or (CH 2 ) 2 C(CH 2 SeMe) 2 depending upon the reaction conditions. The corresponding (CH 2 ) 2 C(CH 2 TeMe) 2 was mentioned some years ago in a paper dealing with the synthesis of ditelluroethers [5], but the reaction was not investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and complexation of dichalcogenoethers with cyclopropyl backbones, (CH2EMe)2 (E=Se or Te)

Levason

Ollivere

Reid

et al. 2010

Journal of Organometallic Chemistry

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Section: Methodsmentioning

confidence: 99%

“…(CH 2 ) 2 C (CH 2 SeMe) 2 [4], [Mn(CO) 5 Cl] [7], [{RuCl 2 (g 6 -p-cymene)} 2 ] and [{OsCl 2 (g 6 -p-cymene)} 2 ] [8] were made by literature methods.…”

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of the Telluroether And Organotellurium(iv) Derivamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and complexation of dichalcogenoethers with cyclopropyl backbones, (CH2EMe)2 (E=Se or Te)

Levason

Ollivere

Reid

et al. 2010

Journal of Organometallic Chemistry

Self Cite

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“…[17][18][19][20][21][22][23] In general, the reaction of a yellow solutions of NNS and [Mn(CO) 5 Br] generated a dark red color over the course of 15 min to 1 hour. Vapor diffusion of pentane or Et 2 O afforded crystalline material that ranged from black to translucent orange.…”

Section: Synthesesmentioning

confidence: 99%

Tuning coordination modes of pyridine/thioether Schiff base (NNS) ligands to mononuclear manganese carbonyls

et al. 2014

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We have investigated the coordination modes of NNS Schiff base, thioether ligands to manganese (I) carbonyls. The ligands contain ortho substituted pyridines (H, CH 3 , OCH 3 , fluorophenyl) and varying substituents (H, CH 3 ) at the Schiff base linkage. In general, reaction of [Mn(CO) 5 Br] with a tridentate NNS ligand in CH 2 Cl 2 affords species in which the thioether-S may be bound or unbound to the manganese center, depending on the steric and electronic substitution in the ligand framework; as a result, the complexes exhibit two or three carbonyl ligands, respectively. Aldehyde-derived ligand frames ( tricarbonyl motif. We highlight that coordination of these NNS ligands to Mn(I) carbonyls occurs on a soft conformational landscape, and that ligand substituents can be rationally employed to favor the desired coordination mode.

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NMR of Organoselenium and Organotellurium Compounds

Panda

Singh

2012

Patai's Chemistry of Functional Groups

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This chapter gives a systematic account of and surveys the available data on 77 Se and 125 Te NMR spectra of organochalcogen compounds such as chacogenols, mono and dichalcogenides, chalcogenolates, tetra and hexa substituted chalcogen compounds, chalcogenyl halides, chalcogen‐containing heterocycles and macrocycles, chalcogen‐oxygen/nitrogen compounds, etc. The review is based on the literature from 1985 to 2011 and includes 780 references. The 77 Se/ 125 Te NMR spectra of organochalcogen compounds reveal expansive chemical shifts (δ Se /δ Te ) leading to sharp sensitivity of these nuclei (Se/Te) to their environment such as solvent, temperature, molecular geometry, ligand backbone, oxidation state, chelate ring size, steric strain, etc. This is well illustrated by the advantageous use of this spectroscopy in the successful determination of the solution state structure of several organochalcogen compounds. It is noted that the 125 Te and 77 Se chemical shifts of a large number of structurally similar organotellurium and selenium compounds show linear relationship.

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Synthesis, spectroscopic and structural characterisation of molybdenum, tungsten and manganese carbonyl complexes of tetrathio- and tetraseleno-ether ligands

Cited by 23 publications

References 19 publications

Synthesis and complexation of dichalcogenoethers with cyclopropyl backbones, (CH2EMe)2 (E=Se or Te)

Synthesis and complexation of dichalcogenoethers with cyclopropyl backbones, (CH2EMe)2 (E=Se or Te)

Tuning coordination modes of pyridine/thioether Schiff base (NNS) ligands to mononuclear manganese carbonyls

NMR of Organoselenium and Organotellurium Compounds

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