Übergangsmetallsubstituierte gallane: Synthese, struktur und bindungsverhältnisse von [(CO)₄CoGaEt₂(NC₇H₁₃)], [(PMe₃)(CO)₃CoGaCl₂(NMe₃)], [(CO)₄CoGaCl₃]K und [(CO)₅MnGaEt₂(NC₇H₁₃)]

The transition metal substituted gallanes [(CO)₅MnGaEt₂(NC₇H₁₃)] (1), [(PMe₃)(CO)₃CoGaCl₂ · (NMe₃)] (2), [(CO)₄CoGaEt₂(NC₇H₁₃)] (3), and [(CO)₄CoGaCl₃]K (4) were obtained by the reaction of the potassium/sodium salts of the manganese-and cobalt-carbonylmetallates with the chlorogallium species ClGaEt₂(NC₇H₁₃), Cl₃Ga(NMe₃), and GaCl₃. The structures were established by single crystal X-ray analysis 1: space group P2_l1/c (I.T.-No.: 14); Z = 4; a = 1425.4(2) pm, b= 1007.4(1 )pm, c = 1429.9(3) pm; β = 113.92(1)°; 2: space group P2_l/m (I.T.-No.: 11); Z = 2; a = 746.1(1) pm, b = 1131.2(1) pm, c = 1061.5(1) pm; β = 101.87(1)°; 3: space group P2_l/c (I.T.-No.: 14); Z = 8; a = 1405.9(2) pm, b = 1786.2(2) pm, c = 1430.9(2) pm; β = 91.47(1)°; 4: space group P2_l/c; Z = 4; a = 1185.7(1) pm, b = 895.4(1) pm, c = 1144.7(3) pm; β = 106.47(2)°. The model compounds [{L′(CO)₃Co}GaX₂L] (L′= CO, PH₃; L = NH₃, X = H, Cl) with polar σ(Co-Ga) bonds and the effect of the substituent on the bond length are characterized with DFT-calculations.