ISSN:
0009-2940
Keywords:
Niobium telluride iodide
;
Tantalum telluride iodide
;
One-dimensional chain compounds
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
NbTe4I and TaTe4I, Two New Telluride Iodides with Chain StructureNbTe4I and TaTe4I, are synthesized in almost quantitative yields by reaction of the elements in the appropriate ratio at 540°C and 480°C, respectively. The crystal structure determinations show that both structures are built up from quasi one-dimensional Nb(Te2)2 and Ta(Te2)2 chains that are separated by isolated iodine atoms. The metal-metal distances within these chains are outside the metal-metal bonding range. Both compounds are formally described as (Nb5+)(Te22-)2(I-) and (Ta5+)(Te2-2)2(I-), and semiconducting properties must be assumed. Short Te-I contacts between Te atoms of and I atoms between the chains indicate significant anion-cation charge transfer.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19921251002
