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In order to investigate the influence of organic groups on the structural types of organoa-rsenic polymolybdates,benzylarsonic acid has been selected to react with sodium molybdate.Threenew complexes have been synthesized and characterized:[C(NH_2)_3]_4 [(C_6H_5CH_2As)_2Mo_6O_(24)](1),Cs_4[(C_6H_5CH_2As)_2Mo_6O_(24)]·5H_2O(2)and[(n-C_4H_9)_4N]_3Na[(C_6H_5CH_2As)_2Mo_6O_(24)].6H_2O(3).Molecularstructure of compound 1 has been determined by means of single-crystal X-ray diffraction studies.Itis monoclinic,space group P2_1/n with cell dimensions of a=12.342(2),b=18.621(2),c=10.042(2),β=105.80(1)°,V=2220.5~3,z=2,μ=15.854cm~(-1),R=0.023.It is demonstrated that the structuraltypes of benzylarsonic polymolybdates are the same as those for alkylarsonic polymolybdates butdifferent from those for arylarsonic polymolybdates.Their elemental analyses,IR and UV spectra andelectrochemical behaviors in aqueous solution have been reported.It is suggested that the arsenic-carbon bond has great influence on the structural types of organoarsenic polymolybdates.
In order to investigate the influence of organic groups on the structural types of organoa-rsenic polymolybdates, benzylarsonic acid has been selected to react with sodium molybdate.Three new complexes have been synthesized and characterized: [C (NH_2) _3] _4 [(C_6H_5CH_2As) (2) and [(n-C_4H_9) _4N] _3Na [(C_6H_5CH_2As) _2Mo_6O_ (24)]. 6H_2O (3) .Molecularstructure of compound 1 has been determined by the method of single-crystal X-ray diffraction studies. Isos monoclinic, space group P2_1 / n with cell dimensions of a = 12.342 (2), b = 18.621 (2), c = , β = 105.80 (1) °, V = 2220.5-3, z = 2, μ = 15.854 cm -1, R = 0.023. It is demonstrated that the structural patterns of benzylarsonic polymolybdates are the same as those for alkylarsonic polymolybdates butdifferent from those for arylarsonic polymolybdates. Their elemental analyzes, IR and UV spectra andelectrochemical behaviors in aqueous solution have been reported. It is suggested that the arsenic-carbon bond has great influ ence on the structural types of organoarsenic polymolybdates.