Crystal structure of tellurium tetrachloride

Buß, Bruno; Krebs, Bernt

doi:10.1021/ic50106a035

Cited by 120 publications

(35 citation statements)

References 15 publications

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“…Several compounds are known to adopt the former type of core geometry, for instance TeC14 (Buss & Krebs, 1971) [and probably TeBr4 (Shoemaker & Abrahams, 1965)], Et3TeC1 (Chadha & Drake, 1986) and Et3TeBr . Aside from the isostructural dichloro and dibromo analogues Fanan et al, 1995), two organotellurium dichlorides form steplike tctramcrs, viz (C6Hs)(p-BrC6H4)TeC12 (Chadha et al, 1983) and (C12HgO)TeCI2 (Korp et al.…”

mentioning

confidence: 99%

Two Polymorphs of Bis(4-methoxyphenyl)tellurium(IV) Diiodide

Farran¹,

Alvarez-Larena²,

Capparelli³

et al. 1998

Acta Crystallogr C

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The title compound, (C7H70)2TeI2 (or Ci4Hi41202Te), crystallizes in space group Pi, either with Z = 8, (Ia), or Z = 4, (Ib). The six independent molecules [four in (Ia) and two in (Ib)] have very similar structures. The geometry at the Te atoms is pseudo-trigonal bipyramidal, with the I atoms in the axial positions and the anisyl groups and the lone pair of electrons in the equatorial plane. The Te--C and Te--

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mentioning

confidence: 99%

Two Polymorphs of Bis(4-methoxyphenyl)tellurium(IV) Diiodide

Farran¹,

Alvarez-Larena²,

Capparelli³

et al. 1998

Acta Crystallogr C

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“…Whereas tellurium tetrachlorides and tetrabromides exist as tetramers in the solid state [64][65][66], they are likely to be monomeric in solution [67][68][69]. Ozin and Vander Voet [25] …”

Section: Formation Of the Mixed Anionsmentioning

confidence: 99%

Identification of mixed bromidochloridotellurate anions in disordered crystal structures of (bdmim)2[TeX2Y4] (X, Y=Br, Cl; bdmim=1-butyl-2,3-dimethylimidazolium) by combined application of Raman spectroscopy and solid-state DFT calculations

Närhi

Kutuniva

Lajunen

et al. 2014

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Laitinen, R. (2014). Identification of mixed bromidochloridotellurate anions in disordered crystal structures of (bdmim)2[TeX2Y4] (X, Y = Br, Cl; bdmim = 1-butyl-2,3 -dimethylimidazolium) by combined application of Raman spectroscopy and solidstate DFT calculations. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 117, 728-738. doi:10.1016/j.saa.2013 1.Introduction.X-ray crystallography provides the most definite means to elucidate structures of different types of materials at the molecular level. However, successful routine structure determinations require crystalline material, which contains well-defined single crystals with ordered, periodically repeating structures. In many cases this is not a case. For instance, disorder and twinning are common occurrences, and the number of modular structures is continually growing. Various techniques have been developed to deal with some of these problems, as exemplified in refs. 1-5, though some types of disorder cannot be resolved by X-ray crystallography alone.Spectroscopic methods have often been evoked to resolve the crystallographic disorder. For instance, crystalline eight-membered SenS8-n ring molecules [6] or [TiCp2SenS5-n] complexes [7] are solid solutions of 30 and 20 molecular species, respectively, taking the presence of isomers into account. Consequently, each chalcogen-atom sites in both compounds are partially occupied by sulfur and selenium atoms. In both cases, individual molecules have been identified by dissolving the crystalline samples, and recording and assigning their 77 Se NMR spectra [6,7].Vibrational spectroscopy is useful in the identification of individual species in disordered crystal

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“…Jahrhunderts bekannt [1]; SeCl2 ist dagegen bisher nur in der Gasphase nachgewiesen worden [2]. SeCLi ist auf Grund seiner Gitterkonstanten [3] der Gruppe der isotypen Tetrahalogenide /?-SeBr 4 [4], TeCU [5,6] und TeBr4 [3] zuzuordnen; die einzige vollständige Kristallstrukturanalyse an einem Vertreter dieser Gruppe ist bisher diejenige von TeCLi [5,6]. Im vorhegenden Beitrag wird über eine Neubestimmung der Phasenbeziehungen fest-fest und fest-flüssig im System Se-SeCLi [7] sowie über das Ergebnis der vollständigen Kristallstrukturbestimmung von ß-SeCU berichtet.…”

Section: Introductionunclassified

“…Die Beobachtung von Dimorphie beim SeCLi (a-und ^-Modifikation) ist in Übereinstimmung mit den Ergebnissen einer Rönt-genpul Voruntersuchung [8] Selentetrachlorid ist dimorph mit einer metastabilen ß-und einer thermodynamisch stabilen a-Modifikation. ß-SeCU kristallisiert im TeCU-Typ [5,6]; das Ergebnis der vollständigen Kristallstrukturanalyse wird in dieser Arbeit (s.u.) mitgeteilt.…”

Section: Introductionunclassified

“…Die Kristallisation aus der Gasphase folgt damit insgesamt der Ostwaldschen Stufenregel; gleiches gilt für die Kristallisation von Selentetrachlorid aus der Schmelze (T > 306 °C; Autoklavenexperiment), bei der ohne Nachtemperphase ausschließlich ß-SeCU gebildet wird. (5) 0,49879(24) 0,51398(39) 0,12659(27) Cl (6) 0,49814(32) 0,01258(41) 0,12433(32) Cl (7) 0 …”

Section: Introductionunclassified

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