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The title compounds have been synthesized and characterized by x-ray analysis. They are isomorphous, belonging to trigonal space group R3m,with crystallo-graphic parameters; (1)α =b =c= 13. 713(5) A ;α= β=γ=83. 66(3)°;V = 2535A3;Z = 2;DC=1. 80gcm-3;F(000) = 1358;M= 1373. 23;(2)α= b = c=13. 687(2) A;α = β = γ = 84. 27(1)°/;V = 2528. 0A3;Z = 2; Dc = 1. 81gcm-3; F (000)= 1362; M = 1377. 23;(3)α = b=c=13. 671(6) A ;α = β = γ=84. 12(3)°;V=2518A3;Z=2;DC = 1. 82 gcm-3;F(000)= 1364;Mr= 1376. 99.The structure of comp ound 2 has been determined with the final R= 0. 061 for 845 reflections with I≥3σ(Ⅰ).The three metal atoms are crystallographically equivalent because of the arbitrariness of orientation of the molecules,and in the sense of crystallography the molecule Fc2CoO(O2CCCl3)6(THF)3 is of C3vsymmetry with centered oxygen atom on the 3-fold axis. The atoms M,C(1~4),C1(1) and O(1) lie on the mirror. Three CC13 groups on one side the Fe2CoO plane and three terminal THF ligands are dynamically
They are isomorphous, belonging to trigonal space group R3m, with crystallo-graphic parameters; (1) α = b = c = 13. 713 (5) A; α = β = γ = 83.66 (3) °; V = 2535A3; Z = 2; DC = 1.80gcm -3; F (000) = 1358; M = 1373.23; α = b = c = 13. 687 (2) A; α = β = γ = 84. 27 (1) ° /; V = 2528. 0A3; Z = 2; Dc = 1.81gcm-3; F (000) = 1362; M = 1377. 23; (3) α = b = c = 13.671 (6) A; α = β = γ = 84.12 (3) °; V = 2518A3; Z = 2; 3; F (000) = 1364; Mr = 1376. 99.The structure of compound 2 has been determined with the final R = 0. 061 for 845 reflections with I ≥ 3σ (Ⅰ). The three metal atoms are crystallographically equivalent because of the arbitrariness of orientation of the molecules, and in the sense of crystallography the molecule Fc2CoO (O2CCCl3) 6 (THF) 3 is of C3vsymmetry with centered oxygen atom on the 3-fold axis. The atoms M, C (1-4 ), C1 (1) and O (1) lie on the mirror. Three CC13 groups on one side the Fe2CoO plane and three terminal THF lig ands are dynamically