Chlorotris(N,N′-dicyclohexylthiourea-S)tellurium(II) chloride, a tellurium complex with a TeClS3coordination sphere

Husebye, Steinar; Törnroos, Karl W.; Zhu, Haizhong

doi:10.1107/s010827010100659x

Cited by 7 publications

(5 citation statements)

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“…of L¢ in refluxing EtOH. 15,16 We were unable to isolate any product from treatment of TeO 2 with four mol equiv. of SMe 2 in a mixture of concentrated HCl and EtOH.…”

Section: Resultsmentioning

confidence: 96%

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Preparation and structures of tellurium(iv) halide complexes with thioether coordination

et al. 2009

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The first chalcogenoether complexes of Te(iv) chloride and bromide are prepared by reaction of the thioether with a suspension of TeX(4) in anhydrous CH(2)Cl(2), and the products characterised by IR, Raman, (1)H and (125)Te{(1)H} NMR spectroscopy and microanalysis. The structures of the distorted octahedral chelate complexes [TeX(4){RS(CH(2))(2)SR}] (X = Cl or Br; R = Me or (i)Pr) and the centrosymmetric halo-bridged dimers [{X(3)(Me(2)S)Te}(2)(micro-X)(2)] (X = Cl or Br) involving Te(iv) are reported and the structures interpreted in terms of a three-centre-four-electron bonding model, with weak, secondary Te-S interactions. The structure of a unique Te(ii) thioether complex, [TeCl{(i)PrS(CH(2))(2)S(i)Pr}][Te(2)Cl(9)] obtained as a decomposition product from a sample of [TeCl(4){(i)PrS(CH(2))(2)S(i)Pr}], in which a Te(ii) thioether cation and Te(iv) chloride anion are weakly associated via micro(2)- and micro(3)-bridging Cl ligands, is also described. In this case distortions in the coordination environment at the Te(ii) ion are attributed to the effects of the Te-based lone pairs.

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“…of L¢ in refluxing EtOH. 15,16 We were unable to isolate any product from treatment of TeO 2 with four mol equiv. of SMe 2 in a mixture of concentrated HCl and EtOH.…”

Section: Resultsmentioning

confidence: 96%

“…15, 16 We were unable to isolate any product from treatment of TeO 2 with four mol equiv. [TeX(L¢) 3 ]X, [TeX 2 (L¢) 2 ] and [Te 2 (L¢) 4 X 2 ]X 2 (L¢ = various substituted thioureas and selenoureas), prepared from TeO 2 , conc.…”

Section: Resultsmentioning

confidence: 99%

Preparation and structures of tellurium(iv) halide complexes with thioether coordination

et al. 2009

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“…Cl]Cl[18]. To the best of our knowledge there are no examples of transition metal complexes containing dchtu.…”

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confidence: 98%

New Complexes with a Sterically Hindered Thiourea: Syntheses and Crystal Structures of [Co(dchtu)₂Cl₂], [Zn(dchtu)₂(NCS)₂] and [Pb(dchtu)₆](SCN)₂·2C₂H₅OH (dchtu = N,N′‐dicyclohexylthiourea)

Jia¹,

Zhu²,

Deng³

et al. 2007

Zeitschrift anorg allge chemie

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New complexes of a sterically hindered thiourea, [M(dchtu) 2 Cl 2 ] (M ϭ Co 1, Ni 2), [Zn(dchtu) 2 (NCS) 2 ] (3) and [Pb(dchtu) 6 ](SCN) 2 · 2C 2 H 5 OH (4) (dchtu ϭ N,NЈ-dicyclohexylthiourea), have been synthesized and characterized. The single crystal structures of 1, 3 and 4 have been determined by single crystal Xray diffraction analyses. Co II , Ni II , and Zn II form 1: 2 compounds with dchtu even if molar excesses of dchtu is used, while Pb II forms 1:6 compound under the same conditions. The dchtu acts as a monodenate S-donor ligand in all the complexes. Co II and Zn II atoms 2059 are tetrahedrally coordinated with two dchtu ligands, and two chloride or isothiocyanate ions, respectively. The Pb II ion in 4 forms an octahedral coordination sphere with six dchtu ligands. The structures of the complexes are stabilized by a system of intermolecular H-bonding.

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“…The Te atoms are tetracoordinate, by three S atoms and a Cl - ion, and exhibit a distorted trapezoidal coordination geometry. Apart from chlorotris( N , N ‘-dicyclohexylthiourea-S)tellurium(II) chloride, this is the only example known for a Te(S 3 Cl) coordination mode. It is noteworthy that two Te···S contacts link two like-charged [Te(SCH 2 CH 2 NH 3 ) 2 ] 2+ dications together.…”

Section: Resultsmentioning

confidence: 99%

Conformation versus Coordination: Synthesis and Structural Investigations of Tellurium(II) Dithiolates Derived from β-Donor-Substituted Thiols

Fleischer

Schollmeyer

2002

Inorg. Chem.

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New methods of preparing tellurium(II) dithiolates, Te(SR)(2), are presented. Te(SCH(2)CH(2)OAc)(2), 1, was made from Te(SCH(2)CH(2)OH)(2) by acetylation of the hydroxyl groups. Te(SCH(2)CH(2)SAc)(2), 2, [Te(SCH(2)CH(2)NH(3))(2)]Cl(2), 3, and Te(SC(6)H(4)(o-NH(2)))(2), 4, were synthesized by ligand exchange reactions of Te(S(t)Bu)(2) with 2 equiv of HSCH(2)CH(2)SAc, [HSCH(2)CH(2)NH(3)]Cl, and HSC(6)H(4)(o-NH(2)), respectively. Of all compounds, 4 exhibits the strongest thermal sensitivity toward decomposition and the largest low-field shift of the (125)Te NMR signal, two features that are attributed to weak Te.N interactions. The structural parameters of the CSTeSC unit exhibit very similar values for all four compounds, while the torsion angles of the side chains differ between the molecules, a feature rationalized by ab initio studies. In the solid state, different kinds of intermolecular aggregation and contacts to the Te atoms are present. 1 and 2 crystallize in the same space group (orthorhombic, Pbcn) and exhibit C(2) symmetric molecules, with two intermolecular Te.S contacts, leading to a trapezoidal coordination mode of the Te atoms. SCCE and C(S)CEC (with E = O, S) torsion angles represent the major differences between 1 and 2, which are attributed to their unlike intermolecular hydrogen bridges. In the solid state structure of 3, [Te(SCH(2)CH(2)NH(3))(2)](2+) cations and Cl(-) anions form a three-dimensional network via N-H...Cl and C-H...Cl hydrogen bonds (triclinic, P(-)1). Two neighboring [Te(SCH(2)CH(2)NH(3))(2)](2+) cations are linked via two Te...S contacts, and each Te atom forms one additional Te...Cl contact, resulting in a slightly distorted trapezoidal coordination mode. In the solid state structure of 4, adjacent molecules form Te...Te and Te...N contacts as well as hydrogen bridges. Two chemically different Te atoms are present, both of which are tetracoordinate with distorted sawhorse configurations. The absence of intramolecular Te...O, Te...S, or Te...N contacts in 1, 2, and 4, respectively, is attributed to the conformational rigidity of the CSTeS unit, where conformation ruling coordination is the case.

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Chlorotris(N,N′-dicyclohexylthiourea-S)tellurium(II) chloride, a tellurium complex with a TeClS₃coordination sphere

Cited by 7 publications

References 8 publications

Preparation and structures of tellurium(iv) halide complexes with thioether coordination

Preparation and structures of tellurium(iv) halide complexes with thioether coordination

New Complexes with a Sterically Hindered Thiourea: Syntheses and Crystal Structures of [Co(dchtu)₂Cl₂], [Zn(dchtu)₂(NCS)₂] and [Pb(dchtu)₆](SCN)₂·2C₂H₅OH (dchtu = N,N′‐dicyclohexylthiourea)

Conformation versus Coordination: Synthesis and Structural Investigations of Tellurium(II) Dithiolates Derived from β-Donor-Substituted Thiols

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Chlorotris(N,N′-dicyclohexylthiourea-S)tellurium(II) chloride, a tellurium complex with a TeClS3coordination sphere

Cited by 7 publications

References 8 publications

Preparation and structures of tellurium(iv) halide complexes with thioether coordination

Preparation and structures of tellurium(iv) halide complexes with thioether coordination

New Complexes with a Sterically Hindered Thiourea: Syntheses and Crystal Structures of [Co(dchtu)2Cl2], [Zn(dchtu)2(NCS)2] and [Pb(dchtu)6](SCN)2·2C2H5OH (dchtu = N,N′‐dicyclohexylthiourea)

Conformation versus Coordination: Synthesis and Structural Investigations of Tellurium(II) Dithiolates Derived from β-Donor-Substituted Thiols

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Chlorotris(N,N′-dicyclohexylthiourea-S)tellurium(II) chloride, a tellurium complex with a TeClS₃coordination sphere

New Complexes with a Sterically Hindered Thiourea: Syntheses and Crystal Structures of [Co(dchtu)₂Cl₂], [Zn(dchtu)₂(NCS)₂] and [Pb(dchtu)₆](SCN)₂·2C₂H₅OH (dchtu = N,N′‐dicyclohexylthiourea)