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The title compound was prepared by the oxidation of MoCl_3 in liquid phase.Thecrystal belongs to the orthorhombic system with space group D_(2h)~(16)-Pmnb and unit cell parameters:a=11.403(1),b=12.345(2),c=14.292(2)■;V=2011.8 ■~3;Z=4,D_c=2.396g/cm~3.Altogether 2303independent reflections were collected on a CAD-4 four-circle diffractometer with Mo Kα radiationin range 2°≤θ≤27°.The crystal structure was solved by heavy-atoms method and refined byfull-matrix least-squares technique to final discrepancy factors R=0.050 and R_w=0 056 for 1513reflections of I≥3σ(I).The configuration of the cluster anion was characterized to be of the sameM1 type structure as presented in the previous paper.The average bond lengths of Mo-Mo andMo-(μ_3-O)are 2.577 ■ and 1.982 ■ respectively.In addition,the effects of bridging atoms,otherligands and bond orders on Mo-Mo bonds are discussed briefly.
The title compound was prepared by the oxidation of MoCl_3 in liquid phase. The crystal belongs to the orthorhombic system with space group D_ (2h) ~ (16) -Pmnb and unit cell parameters: a = 11.403 (1), b = 12.345 ), c = 14.292 (2) ■; V = 2011.8 ■ ~ 3; Z = 4, D_c = 2.396 g / cm ~ 3.Altogether 2303independent reflections were collected on a four-circle diffractometer with Mo Kα radiationin range 2 ° ≦ θ ≦ 27 ° The crystal structure was solved by heavy-atoms method and refined byfull-matrix least-squares technique to final discrepancy factors R = 0.050 and R_w = 0 056 for 1513 reflections of I ≧ 3σ (I) .The configuration of the cluster anion was characterized to be of the same M1 type structure as presented in the previous paper. The average bond lengths of Mo-Mo and MO- (μ3-O) are 2.577 ■ and 1.982 ■ respectively. In addition, the effects of bridging atoms, otherligands and bond orders on Mo-Mo bonds are discussed briefly.