In this paper we report the structure of another new W3 cluster compound H[W3O2(O2CCH3)9]·5H2O prepared by the method reported previously. The title compound crystal lizes in monoctinic system, space group P21 wi...In this paper we report the structure of another new W3 cluster compound H[W3O2(O2CCH3)9]·5H2O prepared by the method reported previously. The title compound crystal lizes in monoctinic system, space group P21 with cell dimensions: a = 8. 237(3),6=13. 273(2),c=14.508(4)A,β=92.97°(3),V=1584A3.Z=2,and Dc=2. 529g/cm3.The average W - W, W -U_3-O,W -Oac and W -Ot distances are 2. 775, 2. 01,2. 09 and 2. 04 A, respectively.展开更多
In this paper detailed studies of the cyclic voltammetry(CV) of trinuclear metal cluster compounds [M_3O_2(O_2CCH_3,)6(H,O),j z+ (M,=Mo3,MoW2,W3) are reported.The result of CV shows that they are similar to each other...In this paper detailed studies of the cyclic voltammetry(CV) of trinuclear metal cluster compounds [M_3O_2(O_2CCH_3,)6(H,O),j z+ (M,=Mo3,MoW2,W3) are reported.The result of CV shows that they are similar to each other.There are a reversible redox peak near-0. 48 V and an irreversible reduced peak near-1.10 V in the scan range of + l.0 V to l. 5 V.It implies that the M_3O_2,clusters might gain one electron to be further reduced.But the two-electron-reduced product of M_3O_2 clusters are instable.The theoretical calculations(EHMO) agree well with the result of the CV experiment.展开更多
The title V-Cu-S heterometallic cluster compound C84 H86Cl4Cu6N2O4P4S6V2, crystallizes in the monoclinic space group P21/n with a=16.381(5), b=17.114(3),c=16.749(6) A,β=107. 04(3)°,V=4490(2)A3, Mr=2128.84,Z=2,Dc...The title V-Cu-S heterometallic cluster compound C84 H86Cl4Cu6N2O4P4S6V2, crystallizes in the monoclinic space group P21/n with a=16.381(5), b=17.114(3),c=16.749(6) A,β=107. 04(3)°,V=4490(2)A3, Mr=2128.84,Z=2,Dc=1. 57 g/cm3,μ= 19. 6 cm-1,F(000)=2160. Final R=0.074(Rw=0.082) for 2662 unique reflections with I≥3σ(I). The V atom in the compound retains the tetrahedral geometry of the VS3O with S-V-S or S-V-O angles of 108.6(6)～110.3 (6)°.The cluster core [V2Cu6S6O2] of the compound can be regarded as two cluster cores [VCu3S3O] bonded by bondings of the Cu-Cu'(distances of 2.774(3)～2.707(5) A) and Cu-S (distances of 2.463(7)～2.396(9) A) with centrosymmetric. Atoms of the cluster core V2Cu6 form a distorted cube with the Cu Cu'or the V-Cu distances of 2. 774(3)～2. 707(5) A.展开更多
文摘In this paper we report the structure of another new W3 cluster compound H[W3O2(O2CCH3)9]·5H2O prepared by the method reported previously. The title compound crystal lizes in monoctinic system, space group P21 with cell dimensions: a = 8. 237(3),6=13. 273(2),c=14.508(4)A,β=92.97°(3),V=1584A3.Z=2,and Dc=2. 529g/cm3.The average W - W, W -U_3-O,W -Oac and W -Ot distances are 2. 775, 2. 01,2. 09 and 2. 04 A, respectively.
文摘In this paper detailed studies of the cyclic voltammetry(CV) of trinuclear metal cluster compounds [M_3O_2(O_2CCH_3,)6(H,O),j z+ (M,=Mo3,MoW2,W3) are reported.The result of CV shows that they are similar to each other.There are a reversible redox peak near-0. 48 V and an irreversible reduced peak near-1.10 V in the scan range of + l.0 V to l. 5 V.It implies that the M_3O_2,clusters might gain one electron to be further reduced.But the two-electron-reduced product of M_3O_2 clusters are instable.The theoretical calculations(EHMO) agree well with the result of the CV experiment.
文摘The title V-Cu-S heterometallic cluster compound C84 H86Cl4Cu6N2O4P4S6V2, crystallizes in the monoclinic space group P21/n with a=16.381(5), b=17.114(3),c=16.749(6) A,β=107. 04(3)°,V=4490(2)A3, Mr=2128.84,Z=2,Dc=1. 57 g/cm3,μ= 19. 6 cm-1,F(000)=2160. Final R=0.074(Rw=0.082) for 2662 unique reflections with I≥3σ(I). The V atom in the compound retains the tetrahedral geometry of the VS3O with S-V-S or S-V-O angles of 108.6(6)～110.3 (6)°.The cluster core [V2Cu6S6O2] of the compound can be regarded as two cluster cores [VCu3S3O] bonded by bondings of the Cu-Cu'(distances of 2.774(3)～2.707(5) A) and Cu-S (distances of 2.463(7)～2.396(9) A) with centrosymmetric. Atoms of the cluster core V2Cu6 form a distorted cube with the Cu Cu'or the V-Cu distances of 2. 774(3)～2. 707(5) A.
