Homo- and heterometallic trinuclear nickel(ii) and cobalt(ii) pivalate complexes |
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| Authors: | Aleksandrov G G Fomina I G Sidorov A A Mikhailova T B Zhilov V I Ikorskii V N Novotortsev V M Eremenko I L Moiseev I I |
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| Institution: | (1) N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian Federation, Russia;(2) International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a ul. Institutskaya, 630090 Novosibirsk, Russian Federation, Russia |
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| Abstract: | The reaction of the dinuclear complex Co2(bpy)2(OOCBut)4 with the tetranuclear complex Ni4( 3-OH)2(OOCBut)6(EtOH)6 afforded the trinuclear heterometallic complex M3(bpy)2(3-OH)(-OOCBut)4(OOCBut) (6) (M = Ni, Co; Ni : Co = 1.2 : 1) in which two metal atoms are in an octahedral environment and one metal atom is in a tetrahedral environment. The reaction of 2,2"-bipyridine with Co4(3-OH)2(OOCBut)6(HOEt)6 (reagent ratio was 2 : 1) or the reaction of bpy with Co8(4-O)2(
n
-OOCBut)12 (reagent ratio was 4 : 1) produced a homometallic analog of 6, viz., the trinuclear cluster Co3(bpy)2(3-OH)(-OOCBut)4(OOCBut) (8). The reaction of 1,10-phenanthroline (phen) with the Co(OH)
n
(OOCBut)2–n
]
x
polymer gave the analogous trinuclear cluster (phen)2Co3(3-OH)(2-OOCBut)4( 1-OOCBut). Compounds 6 and 8 exhibit antiferromagnetic spin-spin exchange interactions. |
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| Keywords: | cobalt(ii) nickel(ii) heterometallic complexes 2 2"-bipyridine 1 10-phenanthroline synthesis X-ray diffraction analysis magnetic properties |
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