• Clegg, William
• Fletcher, Ashleigh
• Harrington, Ross W.
• Henderson, Richard A.
• Lin, Ping
• Thomas, K. Mark
• Bell, Jon

Abstract

Addition of [(Mo2O2S2)-O-V(edt)(2)](2-) (edt) 1,2-ethanedithiolate) to acetonitrile and/ or methanol solutions of Mn-II containingbipyridines [4,4'-trimethylenedipyridine (TDP), 4,4'-bipyridine(4,4'-bpy), 2,2'-bipyridine (2,2'-bpy)] or 15-crown-5 produces threenew heterometallic cluster coordination polymers,[Mn-2{Mo2O2S2(edt)(2)}(2)( TDP)(3)(CH3OH)(2)( NCMe)(2)], 3CH3OHcenter dot 0.25MeCN (1),[Mn(TDP)(2)(H2O)(2)](2+)[Mn{Mo2O2S2(edt)(2))(2)(TDP)(2)}](2-),6CH(3)OH (2), [Mn{Mo2O2S2(edt)(2)}(TDP)(2)( CH3OH)(H2O)]center dotCH3OH (3), and three new multinuclear clusters,[Mn{Mo2O2S2(edt)(2)}(4,4'-bpy)(CH3OH)(4)]center dot 0.5(4,4'-bpy)(4), [Mn{Mo2O2S2(edt)(2)}(2,2'-bpy)(2)]center dot 2CH(3)OH ( 5),and (NEt4)(2)[Mn(15-crown-5) {Mo2O2S2(edt)(2)}(2)] ( 6). Allcompounds were characterized by X-ray crystallography. The coordinationmode of Mn in these compounds depends on the ligands and thecrystallization conditions. Compound 2 readily converts to 1 or 3depending on the reaction and solvent conditions. Compounds 1 and 2were analyzed using thermogravimetric analysis combined with massspectroscopy (TG-MS) in the temperature range 25-500 degrees C. Theroom-temperature magnetic moments for compounds 1-6 were determined.

Topics

• compound
• cluster
• polymer
• mass spectrometry
• thermogravimetry