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- W2019690765 abstract "The four TeII complexes, cis-[TeCl2{(iPrNH)2CS}2] (1), cis-[TeCl2{(iBuNH)2CS}2] (2), trans-[TeCl2{(PhNMe)2CS}2] (3), and trans-[TeCl2{(Et2N)2CS}2] (4), have been synthesised and their molecular structures solved by means of X-ray crystallography. All four complexes are square planar, those with disubstituted thiourea ligands have a cis configuration, those with tetrasubstituted thioureas have a trans configuration. The Te–S bond lengths in 1 and 2 average 2.4994 and 2.5213 A, respectively. The Te–Cl bonds trans to the Te–S bonds have average lengths of 2.8754 and 2.8334 A, reflecting the trans influence of the two disubstituted thioureas. In 3 and 4 with identical ligands trans to each other, the average Te–S and Te–Cl bond lengths are 2.6834 and 2.5964 A, respectively.Cis-trans-Isomerie in quadratisch-planaren [TeCl2(stu)2]-Komplexen mit substituierten, voluminosen Thioharnstoff(stu)-Liganden. Synthesen und Strukturen von vier neuen Tellur(II)-KomplexenDie vier TeII-Komplexe cis-[TeCl2{(iPrNH)2CS}2] (1), cis-[TeCl2{(iBuNH)2CS}2] (2), trans-[TeCl2((PhNMe)2CS}2] (3) und trans-[TeCl2{(Et2N)2CS}2] (4) wurden synthetisiert und ihre Strukturen durch Rontgenkristallstrukturanalysen bestimmt. Die vier Komplexe sind quadratisch-planar, wobei die mit disubstituierten Thioharnstoffliganden eine cis-Konfiguration und die vierfachsubstituierten eine trans-Konfiguration haben. Die Bindungslangen Te–S in 1 bzw. 2 betragen im Mittel 2,4994 bzw. 2,5213 A. Die Te–Cl-Bindungen in trans-Stellung zu den Te–S-Bindungen betragen im Mittel 2,8754 bzw. 2,8334 A, was den trans-Einflus der zwei disubstituierten Thioharnstoffeinheiten widerspiegelt. In 3 und 4 mit identischen Liganden in trans-Stellung zueinander betragen die mittleren Bindungslangen Te–S bzw. Te–Cl 2,6834 bzw. 2,5964 A." @default.
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- W2019690765 date "2001-08-01" @default.
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- W2019690765 title "Syntheses and Structures of Four New Tellurium(II) Complexes" @default.
- W2019690765 doi "https://doi.org/10.1002/1521-3749(200108)627:8<1921::aid-zaac1921>3.0.co;2-#" @default.
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