✍ Scribed by Chinmay Chatterjee; Thomas A. Kaden
No coin nor oath required. For personal study only.
Institut fiir Antirganischc Chcmic, Spitdst.r. 51, C~X1-4056 B a d (5. v. 75) Summary. The stability constants of thr: N P and (:02+ complcx(:s with 1,s-diaracyclooctane-N, N"-tliacctic acid (112DACODA) havc been detcrrnint:cI potciitiometrically in 0 . 5 ~ KNOa at 25'. Only M(DACC)DA) and M(DAC0nA)OHwere observccl. In addition the formatior1 and dissociation kinctics of thc pentacoordinate complexc~ M( DA-CODA) has becn studied in aqucous solution using a stoppcd-[low technique. Formation iollows 'To increase our understanding oi the rcactivi ty of pentacoordinate metal ions and to see whethcr similar mechanisms can' be foiind for ntlwr ligands, we havc studied thc formation and dissaciation of Ni2+ and CoS+ co~riplexes of 1,5-diazar:yclooctanc-1) 3) Present aclclress: Pure Chcrnistry Departcrrient, IJniversity Collcge 01 Scicncc, Calcutta (IIidia). Author to whom correspondcnce should bc acldrcssocl.
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## Abstract The formation and dissociation kinetics of the pentaco‐ordinated Cu^2+^, Ni^2+^, Co^2+^ and Zn^2+^ complexes with 1,4,8,11‐tetramethyl‐1,4,8,11‐tetraazacyclotetradecane (4‐MeCyclam‐14) was studied by pH‐stat techniques and spectrophotometrically. The rates of the reactions between 4‐MeC