ISSN:
0044-2313
Keywords:
Ditelluride
;
[(2,4,6-Ph3C6H2)Te]2
;
Bis(triphenylphosphanegold(I))tellurolate
;
[(2,4,6-Ph3C6H2)Te(AuPPh3)2]PF6
;
Diiodinegold(III) tellurolate
;
[(2,4,6-Ph3C6H2)TeAuI2]2
;
synthesis
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Synthesis and Structure of [(Ph3C6H2)Te]2, [(Ph3C6H2)Te(AuPPh3)2]PF6 and [(Ph3C6H2)TeAuI2]2[(2,4,6-Ph3C6H2)Te]2 reacts with Ph3PAu+ to yield [2,4,6-Ph3C6H2TeAuPPh32]PF6 which can be oxidized by I2 to form the gold(III) complex [(2,4,6-Ph3C6H2)TeAuI2]2. [(2,4,6-Ph3C6H2)Te]2 crystallizes in the monoclinic space group P21/c with a = 810.6(2); b = 2026.5(5); c = 2260.6(7) pm; β = 99.23(3)° and Z = 4. In the crystal structure the ditelluride exhibits a dihedral angle C11—Te1—Te2—C21 of 66.1(2)°. The distance Te1—Te2 is 269.45(6) pm. In the cation of the triclinic complex [(2,4,6-Ph3C6H2)Te(AuPPh3)2]PF6 (space group P1; a = 1197.4(3); b = 1457.2(4); c = 1680.0(6) pm; α = 84.69(3)°; β = 85.11(3)°; γ = 75.54(3)°; Z = 2) a pyramidal skeleton RTeAu2 with distances Te—Au = 259.2(1) and 257.8(2) pm and Au—Au = 295.3(1) pm is present. [(2,4,6-Ph3C6H2)TeAuI2]2 crystallizes in the triclinic space group P1 with a = 1086.3(3); b = 1462.9(6); c = 1654.2(2) pm; α = 85.25(2)°; β = 87.44(1)°; γ = 80.90(3)°; Z = 2. In the centrosymmetrical dinuclear complex [(2,4,6-Ph3C6H2)TeAuI2]2 the Au atoms exhibit a square-planar coordination by two iodine atoms and two tellurolate ligands. The tellurolate ligands form symmetrical bridges with distances Te—Au = 260.0 pm. The distances Au—I are in the range of 260.3(1) and 263.7(1) pm.
Notes:
[(2,4,6-Ph3C6H2)Te]2 reagiert mit Ph3PAu+ unter Bildung von [2,4,6-Ph3C6H2)Te(AuPPh3)2]+, das von I2 zu der Gold(III)-Verbindung [(2,4,6-Ph3C6H2)TeAuI2]2 oxidiert werden kann. [(2,4,6-Ph3C6H2)Te]2 kristallisiert monoklin in der Raumgruppe P21/c mit a = 810,6(2); b = 2026,5(5); c = 2260,6(7) pm; β = 99,23(3)° und Z = 4. In der Kristallstruktur bildet das Ditellurid einen Diederwinkel C11—Te1—Te2—C21 von 66,1(2)°. Der Abstand Te1—Te2 beträgt 269,45(6) pm. Im Kation der triklinen Verbindung [(2,4,6-Ph3C6H2)Te(AuPPh3)2]PF6 (Raumgruppe P1; a = 1197,4(3); b = 1457,2(4); c = 1680,0(6) pm; α = 84,69(3)°; β = 85,11(3)°; γ = 75,54(3)°; Z = (2) liegt ein pyramidales RTeAu2-Gerüst mit Abständen Te—Au = 259,2(1) und 257,8(2) pm und Au—Au = 295,3(1) pm vor. [(2,4,6-Ph3C6H2)TeAuI2]2 kristallisiert in der triklinen Raumgruppe P1 mit a = 1086,3(3); b = 1462,9(6); c = 1654,2(2) pm; α = 85,25(2)°; β = 87,44(1)°; γ = 80,90(3)°; Z = 2. Im zentrosymmetrischen Zweikernkomplex [(2,4,6-Ph3C6H2)TeAuI2]2 sind die Au-Atome quadratisch planar von zwei Iod-und zwei Tellurolatoliganden koordiniert. Die Tellurolatoliganden bilden symmetrische Brücken mit Au—Te-Abständen von 260,0 pm. Die Au—I-Abstände liegen zwischen 260,3(1) und 263,7(1) pm.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19946201003
