Structural trends in TeI2RR′: Crystal structures and NMR spectra of TeI2(CH2SiMe3)2, TeI2Th(CH2SiMe3), TeI2Ph(CH2SiMe3), and TeI2Th2 (Th = 2‐Thienyl, C4H3S)

Poropudas, Merja J.; Vigo, Ludmila; Oilunkaniemi, Raija; Laitinen, Risto S.

doi:10.1002/hc.20688

Cited by 9 publications

(1 citation statement)

References 35 publications

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“…We noticed similar parallel dimer/catemer chains (see Figure 7 a,b) vs. only dimeric crystal form (see Figure 7 c) in a polymorphic pair of di-iodo-phenyl-(trimethylsilylmethyl)-tellurium (ISALOE01/ISALOE [ 22 ]). Unlike this, discrete dimers in Z’ = 2 ( Figure 7 a) and I---I associated dimers in Z’ = 1 (see Figure 7 c) form different chains.…”

Section: Resultsmentioning

confidence: 93%

Crystals at a Carrefour on the Way through the Phase Space: A Middle Path

Torubaev¹,

Skabitsky²

2021

Molecules

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Multiple supramolecular functionalities of cyclic α-alkoxy tellurium-trihalides (including Te---O, Te---X (X = Br, I) and Te---π(C=C) supramolecular synthons) afford rich crystal packing possibilities, which consequently results in polymorphism or Z’ > 1 crystal structures. Example of three crystal forms of cyclohexyl-ethoxy-tellurium-trihalides, one of which combines the packing of two others, affords a unique model to observe the supramolecular synthon evolution at the early stages of crystallization, when crystals on the way find themself at a carrefour between the evolutionally close routes, but fail to choose between two energetically close packing patterns, so taking the “middle path”, which incorporates both of them (and results in two crystallographically independent molecules). In general, this allows a better understanding of the existing structures, and an instrument to search for the new polymorphic forms.

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Section: Resultsmentioning

confidence: 93%

Crystals at a Carrefour on the Way through the Phase Space: A Middle Path

Torubaev¹,

Skabitsky²

2021

Molecules

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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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