Two New heteropoly molydovanadateselenite complexes with formulas[Se2Mo2V4O24]8-and[Se2Mo3V3O24]7- were reported for the first time.These complexes were isolated at pH=2.It is proved that the ratios of Mo and V in mat...Two New heteropoly molydovanadateselenite complexes with formulas[Se2Mo2V4O24]8-and[Se2Mo3V3O24]7- were reported for the first time.These complexes were isolated at pH=2.It is proved that the ratios of Mo and V in materidal influence the constitution of complexes.These complexes were characterized by elemental analysis,IR,UV,XRD,molar conductance and TG-DTA.It is deduced that these complexes may have the basic skeleton of X2M6 structure.展开更多
利用 TG、DTA和变温 IR研究了具有 Keggin结构的稀土钼钒三元杂多配合物 K7H2 L n Mo6 V6 O39·x H2 O( L n=L a,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,下同 )和 K9HL n Mo5V7O39· x H2 O的热解范围 ;利用酸碱滴定及紫外光谱法确定了它们...利用 TG、DTA和变温 IR研究了具有 Keggin结构的稀土钼钒三元杂多配合物 K7H2 L n Mo6 V6 O39·x H2 O( L n=L a,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,下同 )和 K9HL n Mo5V7O39· x H2 O的热解范围 ;利用酸碱滴定及紫外光谱法确定了它们在水溶液中存在的 p H范围 ,并讨论了这些配合物在水溶液中酸解及碱解的反应机理。展开更多
文摘Two New heteropoly molydovanadateselenite complexes with formulas[Se2Mo2V4O24]8-and[Se2Mo3V3O24]7- were reported for the first time.These complexes were isolated at pH=2.It is proved that the ratios of Mo and V in materidal influence the constitution of complexes.These complexes were characterized by elemental analysis,IR,UV,XRD,molar conductance and TG-DTA.It is deduced that these complexes may have the basic skeleton of X2M6 structure.
文摘利用 TG、DTA和变温 IR研究了具有 Keggin结构的稀土钼钒三元杂多配合物 K7H2 L n Mo6 V6 O39·x H2 O( L n=L a,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,下同 )和 K9HL n Mo5V7O39· x H2 O的热解范围 ;利用酸碱滴定及紫外光谱法确定了它们在水溶液中存在的 p H范围 ,并讨论了这些配合物在水溶液中酸解及碱解的反应机理。
