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  • 1
    Electronic Resource
    Electronic Resource
    (1,1′,3,3′-Tetra-tert-butyl-5,5′-pentafulvalen) dithallium - Synthese und Kristallstruktur: Ein Beitrag zur Diskussion von nichtklassischen Thallium-Thallium-Wechselwirkungen (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1693-1697 
    Details
    ISSN: 0009-2940
    Keywords: Nonclassical T1(I)-T1(I) interactions ; Thallium, fulvalene complex ; (Cyclopentadienyl)thallium complex ; 5,5′;-Pentafulvalene, 1,1′;,3,3′;-tetra-tert-butyl-dithallium ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (1,1′,3,3′-Tetra-tert-butyl-5,5′-pentafulvalene)dithallium - Synthesis and Crystal Structure: a Contribution to the Discussion of Nonclassical TI(I)-TI(I) InteractionsReaction of 1,1′,3,3′-tetra-tert-butyl-5,5′-dihydropentafulvalenediyldilithium with stoichiometric amounts of thallium chloride affords the dinuclear complex (η5:(η5-tBu4C10H4)Tl2 (2). Compound 2 is air-and moisture-sensitive, and photolabile. It crystallizes in the space group P•1 and consists of two (cyclopentadienyl)thallium units which are connected by a central C-C bond and twisted against each other by 70°. The monomeric units of 2 form a two-dimensional polymer with a zick-zack chain of T1 atoms and a periphery of substituted cyclopentadienyl ligands. Rather short T1-T1 contacts of 3.760 and 3.998 Å are formed within a dimeric substructure. The geometry of the cyclopentadienyl ligands around the shortest T1-T1 bond is similar to that predicted by the theory for weak T1-T1 interactions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240804
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  • 2
    Electronic Resource
    Electronic Resource
    Kristallines Tl2B9H9C2Me2: Synthese und Festkörperstruktur; ein Beitrag zum Problem “attraktive Tl(I)-Tl(I)-Wechselwirkungen” (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 295-299 
    Details
    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
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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