ISSN:
0009-2940
Keywords:
Dithallium dicarbollide, crystal structure
;
Nonclassical Tl(I)-Tl(I) interactions
;
Thallium nonahydro-2,3-dimethyl-1-thalla-2,3-dicarba-closo-dodecaborate
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Crystalline Tl2B2H9C2Me2: Synthesis and Solid State Structure; a Contribution to the Problem of Tl(I)-Tl(i) InteractionsCrystalline Tl2B9H9C2Me2 (1) is obtained in the reaction of the carborane B9H11C2Me2 with two equivalents of thallium(I) ethanolate. An X-ray diffraction study of 1 shows - contrary to the expectation - the presence of isolated thallium ions and thalladicarbollide counteranions. The latter represent ion pairs composed of Tl(I)+ and B9H9C2Me212- units forming slipped icosahedrons. All possible Tl-Tl distances in 1 are too long for even weak attractive interactions, with one exception: A set of symmetry-equivalent cations possesses a Tl-Tl distances of 3.67 A, which is in a range postulated by calculations for weak bonding.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240209
