염기성 용액속에서 cis-${eta}-[Co(3,2,3,-tet))CO_3;or;C_2O_4)]^+$ (3,2,3-tet=4,7-diazadecane-1,10-diamine)에 대한 Carbonato 혹은 Oxalato 리간드의 고리열림반응이 수용액 및 유기용매-물혼합용매속에서 조사되었다. 그 결과 cis-${eta}-[Co(3,2,3,-tet))CO_3;or;C_2O_4)]^+$에서 킬레이트된 $CO_3^{2-}$ 혹은 $C_2O_4^{2-}$의 두 개의 산소원자 중 한 개가 해리하여 $OH^-$가 치환되고 3,2,3,-tet의 재배열이 일어나 cis-${alpha}[Co(3,2,3,-tet)(OH)(OCD_2;or;OC_2O^3)]$가 생성되었고, 반응은 해리성인 Dcb(dissociative conjugated base) 메카니즘으로 진행되었다. 연이어 $C_2O_4^{2-}$ 혹은 $CO_3^{2-}$의 나머지 한 개의 산소원자가 해리하여 cis-${alpha}-[Co(3,2,3-tet)(OH)_2]^-$가 생성되었고 이것은 다시 cis-${eta}-[Co(3,2,3-tet)(OH)_2]^+$로 이성질화 반응이 일어났다.
The base-catalysed carbonato or oxalato ring opening of cis-${eta}-[Co(3,2,3,-tet))CO_3;or;C_2O_4)]^+$(3,2,3-tet=4,7-diazadecane-1,10-diamine, $C_2O_4$=oxalate) has been investigated in aqueous solution and in mixed aqueous-organic solvent. The rearrangement of 3,2,3-tet and carbonato or oxalato ring opening of cis-${eta}-[Co(3,2,3,-tet))CO_3;or;C_2O_4)]^+$ occurred via the dissociation of one of the two coordinating carbonato or oxalato oxygen atoms. The resulting product was cis-${alpha}-[Co(3,2,3-tet)(OH)(OCO_2;or;OC_2O_3)_3].$ It has been suggested that the base-catalysed reaction of cis-${eta}-[Co(3,2,3,-tet))CO_3;or;C_2O_4)]^+$ takes place via the Dcb(dissociative conjugated base) mechanism. The other oxygen atom of carbonato or oxalato was dissociated continuously to give cis-${alpha}-[Co(3,2,3-tet)(OH)_2]^+.$ Cis-${alpha}-[Co(3,2,3-tet)(OH)_2]^+$ was isomerized to cis-${eta}-[Co(3,2,3-tet)(OH)_2]^+.$
