By the reaction of binuculear cobalt-containing polyoxovanadate [Co2(H2O)2V10O30]6– with methanol, tridecanuclear cobalt containing polyoxovanadate, [Co13(OH)6(OCH3)6V24O72]10– (Co13), was synthesized. Single crystals suitable for x-ray crystallographic analysis were obtained as trimethylphenyl ammonium...