염기성 촉매에 의한 $cis-{\beta}-$$[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 고리열림 반응

윤두천,오창언,김복조,도명기,Yoon, Doo Cheon,Oh, Chang Eon,Kim, Bok Jo,Doh, Myung Ki 대한화학회 1996 대한화학회지 Vol.40 No.7

염기성 용액속에서 cis-${\beta}-[Co(3,2,3,-tet))CO_3\;or\;C_2O_4)]^+$ (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-${\beta}-[Co(3,2,3,-tet))CO_3\;or\;C_2O_4)]^+$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-${\beta}-[Co(3,2,3-tet)(OH)_2]^+$로 이성질화 반응이 일어났다. The base-catalysed carbonato or oxalato ring opening of cis-${\beta}-[Co(3,2,3,-tet))CO_3\;or\;C_2O_4)]^+$(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-${\beta}-[Co(3,2,3,-tet))CO_3\;or\;C_2O_4)]^+$ 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-${\beta}-[Co(3,2,3,-tet))CO_3\;or\;C_2O_4)]^+$ 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-${\beta}-[Co(3,2,3-tet)(OH)_2]^+.$

수용액에서 $Hg^{2+}$에 의한 trans-[Co(3,2,3-tet)X$_2]^+$ (3,2,3-tet = 4,7-diazadecane-1,10-diamine, $X_2\;=\;Cl_2,\;(NO_2)Cl,\;Br_2,\;(NO_2)Br,\;(NO_3)_2)$ 착물의 아쿠아 반응

윤두천,오창언,도명기,Doo Cheon Yoon,Chang Eon Oh,Myung Ki Doh 대한화학회 1993 대한화학회지 Vol.37 No.11

수용액상에서 $Hg^{2+}$에 의한 trans-[Co(3,2,3-tet)$X_2]^+$ (3,2,3-tet = 4,7-diazadecane-1,10-diamine, $X_2\;=\;Cl_2,\;(NO_2)Cl,\;Br_2,\;(NO_2)Br,\;(NO_3)_2)$ 착물의 아쿠아 반응이 연구되었다. 생성물을 확인하고 반응메카니즘을 추정하기 위하여 크로마토그래피를 사용하였고 전자흡수 스펙트럼을 측정하였다. 그 결과 네자리 리간드인 3,2,3-tet가 배위된 여러가지 $trans-[Co(3,2,3-tet)X_2]^+$ 착물은 각각 아쿠아된 trans-[Co(3,2,3-tet)$(OH_2)_2]^{3+}$ 착물을 거쳐 cis-${\beta}$-[Co(3,2,3-tet)$(OH_2)_2]^{3+}$ 착물이 생성되었다. $Hg^{2+}$에 의한 trans-$[Co(3,2,3-tet)Cl_2]^+$ 착물과 trans-[Co(3,2,3-tet)$(NO_2)Cl]^+$ 착물의 아쿠아 반응에 대한 메카니즘을 추정하기 위하여 속도론적 조사를 하였따. 그 결과 $trans-[Co(3,2,3-tet)Cl_2]^+$ 착물은 D(dissociative)-메카니즘으로 진행되었고, trans-[Co(3,2,3-tet)$(NO2_)Cl]^+ $착물은 $I_d$(interchange dissociative)-메카니즘으로 진행되었다. 그리고 입체화학적인 거동을 조사하기 위하여 라세미(R,R:S,S)3,2,3-tet 대신에 키랄성이 R,R인 3,2,3,-tet를 배위시킨 trans-$[Co(R,R-3,2,3-tet)Cl_2]^+$ 착물에 $Hg^{2+}$를 용리시켰을 때 아쿠아 반응에 대한 원편광이색성(circular dichroism) 스펙트럼을 측정하여 그 절대구조를 확인한 결과 ${\Delta}-cis-{\beta}$-[Co(R,R-3,2,3-tet)$(OH_2)_2]^{3+}$ 착물이 생성되었다. $Hg^{2+}$-induced aquation trans-[Co(3,2,3-tet)$X_2]^+$(3,2,3-tet = 4,7-diazadecane-1,10-diamine, $X_2\;=\;Cl_2,\;(NO_2)Cl,\;Br_2,\;(NO_2)Br,\;(NO_3)_2)$ complexes was investigated in aqueous solution. The products and the reaction mechanism were confirmed by chromatography, UV/Vis. spectrum, and circular dichroism (CD) spectrum. From the results, $Hg^{2+}$-induced aquation of 3,2,3-tet system has been produced cis-${\beta}$ complex via trans complex. The kinetic studies on $Hg^{2+}$-induced aquation of trans-[Co(3,2,3-tet)$Cl_2]^+$ complex and trans-[Co(3,2,3-tet)$(NO_2)Cl]^+$ complex were also carried out to study the reaction mechanism. The results show that trans-[Co(3,2,3-tet)$Cl_2]^+$ complex undergoes the D(dissociative)-mechanism and trans-[Co(3,2,3-tet)$(NO_2)Cl]^+$ complex $I_d$(interchange dissociavite)-mechanism. In order to confirm steric course for the reaction mechanism, $Hg^{2+}$-induced aquation on trans-[Co(R,R-3,2,3-tet)$Cl_2]^+$ complex to which chiral R,R-3,2,3-tet was coordinated instead of the racemic(R,R:S,S) 3,2,3-tet was used has been examined by CD spectrum. From the results, the final complex was confirmed to be ${\Delta}-cis-{\beta}$-[Co(R,R-3,2,3-tet)$(OH_2)_2]^{3+}$ complex indicating the chirality was retained through whole process.

용리제에 의한 금속착물의 크로마토그래피적인 분리

吳昌彦,尹斗千 嶺南大學校附設 基礎科學硏究所 1986 基礎科學硏究 Vol.6 No.-

The elution behaviors of cationic complexes were determined by measuring retention volumes on SP-Sephadex C-25 cation exchange resin. When cationic complexes were eluted in the low concentration of eluents, their elution order was accordance with the order of their increasing charges. At this time, the elution depends on the strength of adsorptivities between cationic complex and the resin. However the elution order of cationic complexes was reserved when they were eluted in the high concentration of eluents. On this occasion, cationic complexes have been eluted predominantly by ion-association between cationic complex and eluent. Hydrophilic complexes were associated more strongly with chloride ion than bromide ion. But hydrophobic complexes were opposed to above. In the comparision of sulfate ion and halide ions(Cl- and Br-), hydrophilic complexes were associated more easily with sulfate ion than halide ions(Cl- and Br-), and hydrophobic complexes were opposed to above.

Hg²+에 의한 cis-〔Co(en)₂(L)CI²+](L=아민류) 착물의 아쿠아화 및 킬레이트화 반응

尹斗千,金福祚,都命基,吳昌彦 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

수용액 및 유기용매-물 혼합용매속에서 L이 NH₃,NH₂CH₃,??, glyOCH₃, ??, NH₂CH₂CONH₂,이 배위된 ?? (en=1,2-diaminoethane)에 ??을 작용시켰을때 속도론적인 자료, 원평광이색성 스펙트라, 이온교환 크로마토그래피에 의한 생성물 분석 및 용매의 성질인 Y(ionizing power)를 이용한 m(Grunwald-Winstein의 기울기) 값의 결과들로 부터 반응은 ??-메카니즘으로 제안되었다. 반응 결과 L이 NH₃과 NH₂CH₃ 이 배위된 ??은 Cl이 해리되어 H₂O분자가 치환되었으며, L이 ??,glyOCH₃, ??, NH₂CH₂CONH₂과 NH₂CH₂CN이 배위된 ??은 Co(Ⅲ)에 대한 각 리간드 L의 킬레이트화가 일어났다. 에탄올-물 혼합용매 속에서 ??을 제외한 ??은 에탄올의 양이 증가될수록 속도상수(k) 의 값이 증가되었고, 또한 30% 유기용매-물 혼합용매 속에서의 속도상수의 값이 30% 2-프로판올-물>30% 에탄올-물>물의 순서를 나타내었다. 그러나 ??은 이와 반대의 결과를 나타내었다. 각 착물들의 속도상수의 차이에 있어서 ?? 및 ??은 리간드장 파라메타(△)와 관계가 있었지만, ??(L=??,glyOCH₃, ??, NH₂CH₂CONH₂, NH₂CH₂CN)은 이와 관계가 없었다. ??에 대하여 ??을 첨가시켜 ??이 촉매로서 작용하는 반응에서 ??에 의하여 그 반응 메카니즘이 변화되는 것이 아니라 단지 속도만 변화되었다. It has been suggested that ??-promoted reaction of a series of?? (en=1.2-diaminoethane with L=NH₃,NH₂CH₃,??, glyOCH₃??, NH₂CH₂CONH₂, and NH₂CH₂CN proceeds by dissociative interchange(??) mechanism from kinetic data, circular dichroism spectra, analyses of products, and the values of m(Grunwald-Winstein plot) using Y (solvent ionizing power) in aqueous solution and in mixed aqueous-organic solvent. It has been found that chloride replacement by water (aquation) for the series with L=NH?? and NH??CH?? and chelation of ligand L to Co(Ⅲ) for the series with L=??, glyOCH₃,??, NH₂CH₂CONH₂, and NH₂CH₂CN occurs, respectively. The rate constants on ??-induced reaction of the series except ?? were increased with increasing the contents of ethanol in mixed water-ethanol solvents. In mixed water-30% organic solvents, the rate constants of the series except ?? have also been measured in the order 30% 2-propanol-water>30% ethanol-water>water. However, the rate constants of ?? were reversed. The rate constants of the series with L=NH?? and NH??CH?? were related to ligand field parameter (△), but those of the series with L=??, glyOCH₃, ??, NH₂CH₂CONH₂, NH₂CH₂CN were not.That reaction between the series and ?? in aqueous media containing NO₃ has been investigated. The results for the reaction do not alter the mechanism, but the rate only was altered.

μ-Oxo 및 μ-L-Proline(O,O') 및 tpen (=N,N,N',N'-tetrakis(2-pyridylmethyl)-1,2-diaminoethane)이 배위된 이핵 Fe(Ⅲ)착물의 합성과 그 특성에 관한 연구

윤두천, 윤정민, 오창언 영남대학교 기초과학연구소 2000 基礎科學硏究 Vol.20 No.-

Recently, iron-containing proteins have attracted much attention owing to their ability of dioxygen transport and storage, so many model complexes have been synthesized. Dinuclear Fe(III) complex with μ-oxo and μ-O,O'-bridging L-proline has been prepared; [Fe2(μ-O)(μ-L-proline)2(tpen)](PF6)2 (tpen=N,N,N',N'-tetrakis(2-pyridylmethyl)-1,2-diaminoethane). The structure of the dinuclear complex was identified by various spectroscopic method. The electrochemical characterization of the dinuclear complex was investigated by cyclic voltammetry. The L-proline-bridged complex exhibit one electron reduction waves. The complex confirmed that the total number of electrons involved in the reduction is one; Fe2(III, III) → Fe2(III, II). When acid(p-toluenesulfonic acid) add to [Fe2(μ-O)(μ-L-proline)2(tpen)]2+, the splitting wave was observed in acetonitrile.

$Hg^{2+}$에 의한 cis-[Co(en)$_2$(L)Cl]$^{2+}$ (L = 아민류) 착물의 아쿠아화 및 킬레이트화 반응

오창언,윤두천,김복조,도명기,Chang Eon Oh,Doo Cheon Yoon,Bok Jo Kim,Myung Ki Doh 대한화학회 1992 대한화학회지 Vol.36 No.4

수용액 및 유기용매-물 혼합용매속에서 L이 $NH_3$, $NH_2$$CH_3$, $glyOC_2H_5$, $glyOCH_3$, $dl-alaOC_2$$H_5$, $NH_2$$CH_2$$CONH_2$, $NH_2$CH$_2$CN 이 배위된 cis-[Co(en)$_2$(L)Cl]$^{2+}$ (en = 1,2-diaminoethane)에 $Hg^{2+}$을 작용시켰을 때 속도론적인 자료, 원평광이색성 스펙트라, 이온교환 크로마토그래피에 의한 생성물 분석 및 용매의 성질인 Y(ionizing power)를 이용한 m(Grunwald-Winstein의 기울기)값의 결과들로 부터 반응은 I$_{d-}$메카니즘으로 제안되었다. 반응 결과 L이 $NH_3$과 NH$_2$CH$_3$이 배위된 cis-[Co(en)$_2$(L)Cl]$^{2+}$은 Cl$^-$이 해리되어 H$_2$O 분자가 치환되었으며, L이 glyOC$_2$H$_5$, glyOCH$_3$, dl-alaOC$_2$H$_5$, NH$_2$CH$_2$CONH$_2$과 NH$_2$CH$_2$CN이 배위된 cis-[Co(en)$_2$(L)Cl]$^{2+}$은 Co(Ⅲ)에 대한 각 리간드 L의 킬레이트화가 일어났다. 에탄올-물 혼합용매 속에서 cis-[Co(en)$_2$(NH$_2$CH$_2$CN)Cl]$^{2+}$을 제외한 cis-[Co(en)$_2$(L)Cl]$^{2+}$은 에탄올의 양이 증가될수록 속도상수(k)의 값이 증가되었고, 또한 30${\%}$ 유기용매-물 혼합용매 속에서의 속도상수의 값은 30${\%}$ 2-프로판올-물>30${\%}$ 에탄올-물>물의 순서를 나타내었다. 그러나 cis-[Co(en)$_2$(NH$_2$CH$_2$CN)Cl]$^{2+}$은 이와 반대의 결과를 나타내었다. 각 착물들의 속도상수의 차이에 있어서 cis-[Co(en)$_2$(NH$_3$)Cl]$^{2+}$ 및 cis-[Co(en)$_2$(NH$_2$CH$_3$)Cl]$^{2+}$은 리간드장 파라메타(${\Delta}$)와 관계가 있었지만, cis-[Co(en)$_2$(L)Cl]$^{2+}$(L = $glyOC_2$H$_5$, glyOCH$_3$, dl-alaOC$_2$H$_5$, $NH_2$CH$_2$CONH$_2$, $NH_2$CH$_2$CN)은 이와 관계가 없었다. cis-[Co(en)$_2$(L)Cl]$^{2+}$에 대하여 $NO_3^-$을 첨가시켜 $Hg^{2+}$이 촉매로서 작용하는 반응에서 $NO_3^-$에 의하여 그 반응 메카니즘이 변화되는 것이 아니라 단지 속도만 변화되었다. It has been suggested that Hg$^{2+}$-promoted reaction of a series of cis-[Co(en)$_2$(L)Cl]$^{2+}$ (en = 1,2-diaminoethane) with L = NH$_3$, NH$_2$CH$_3$, glyOC$_2$H$_5$, glyOCH$_3$, dl-alaOC$_2$H$_5$, NH$_2$CH$_2$CONH$_2$, and NH$_2$CH$_2$CN proceeds by dissociative interchange(I$_d$) mechanism from kinetic data, circular dichroism spectra, analyses of products, and the values of m(Grunwald-Winstein plot) using Y (solvent ionizing power) in aqueous solution and in mixed aqueous-organic solvent. It has been found that chloride replacement by water (aquation) for the series with L = NH$_3$ and NH$_2$CH$_3$ and chelation of ligand L to Co(Ⅲ) for the series with L = glyOC$_2$H$_5$, glyOCH$_3$, dl-alaOC$_2$H$_5$, NH$_2$CH$_2$CONH$_2$, and NH$_2$CH$_2$CN occurs, respectively. The rate constants on Hg$^{2+}$-induced reaction of the series except cis-[Co(en)$_2$(NH$_2$CH$_2$CN)Cl]$^{2+}$ were increased with increasing the contents of ethanol in mixed water-ethanol solvents. In mixed water-30${\%}$ organic solvents, the rate constants of the series except cis-[Co(en)$_2$(NH$_2$CH$_2$CN)Cl]$^{2+}$ have also been measured in the order 30${\%}$ 2-propanol-water > 30${\%}$ ethanol-water > water. However, the rate constants of cis-[Co(en)$_2$(NH$_2$CH$_2$CN)Cl]$^{2+}$ were reversed. The rate constants of the series with L= NH$_3$ and NH$_2$CH$_3$ were related to ligand field parameter (${\Delta}$), but those of the series with L = glyOC$_2$H$_5$, glyOCH$_3$, dl-alaOC$_2$H$_5$, NH$_2$CH$_2$CONH$_2$, NH$_2$CH$_2$CN were not. The reaction between the series and Hg2+ in aqueous media containing NO$_3^-$ has been investigated. The results for the reaction do not alter the mechanism, but the rate only was altered.

수용액 및 물-유기용매 혼합용매에서의 Hg$^{2+}$ 에 의한 Co(Ⅲ) 착물의 수화반응

오창언,윤두천,도명기,Oh Chang Eon,Yoon Doo Cheon,Doh Myung Ki 대한화학회 1990 대한화학회지 Vol.34 No.5

Observed rate constants (k$_{obs.}$) for Hg$^{2+}$-catalysed aquation of cis-[Co(en)$_2$(OH$_2$)Cl]$^{2+}$, [Co(NH$_3$)$_5$Cl]$^{2+}$, cis-[Co(NH$_3$)$_4$(OH$_2$)Cl]$^{2+}$, and [Co(NH$_2$CH$_3$)$_5$Cl]$^{2+}$ were measured at various concentrations of Hg$^{2+}$. The k$_{obs.}$ was increased with increasing the concentrations of Hg$^{2+}$. The k$_{obs.}$ were related to mechanistically derived rate constants by the relationship; Rate = k$_2$K[complex][Hg$^{2+}$]. Various mixed aqueous-organic solvent have been successfully employed for Hg$^{2+}$-catalysed aquation of octahedral myetal complexes. From the slope of the plot of log k againt Y (solvent ionizing power), the mechanism on the aquation of Co(Ⅲ) complexes by Hg$^{2+}$ has been suggested to be I$_d$-mechanism. The change in a rate on aquation of each Co(Ⅲ) complex was related to the ligand field parameters (${\Delta}$), for Co(Ⅲ) complexes. 촉매로서 Hg$^{2+}$을 사용한 수화반응에서 cis-[Co(en)$_2$(OH$_2$)Cl]$^{2+}$, [Co(NH$_3$)$_5$Cl]$^{2+}$, cis-[Co(NH$_3$)$_4$(OH$_2$)Cl]$^{2+}$ 및 [Co(NH$_2$CH$_3$)$_5$Cl]$^{2+}$착물들은 Hg$^{2+}$의 농도가 증가할수록 관측속도상수(k$_{obs}$)의 값이 증가하였다. Hg$^{2+}$에 의한 수화반응의 속도법칙은 Rate = k$_2$K[complex][Hg$^{2+}$]이었고, 그 메카니즘이 연구되었다. 또한 여러가지 유기용매-물 혼합용매에서 Co(Ⅲ)착물의 Hg$^{2+}$에 의한 수화반응이 연구되었다. 용매의 성질인 Y (solvent ionizing power)값에 대한 log k를 도시하여 그 기울기인 m값을 얻었다. 그 m값으로부터 수화반응의 메카니즘을 추정하였다. 속도론적인 자료로부터 Hg$^{2+}$에 의한 Co(Ⅲ)착물의 수화반응이 I$_{d^-}$메카니즘으로 제안되었다. 각 Co(Ⅲ)착물의 속도의 차이는 여러가지 리간드가 배위된 Co(Ⅲ)착물의 리간드장파라메타(${\Delta}$)값과 관계가 있었다.

용리제의 종류에 따른 금속착물의 크로마토그래피적인 거동에 관한 연구

오창언,윤두천,Chang Eon Oh,Doo Cheon Yoon 대한화학회 1987 대한화학회지 Vol.31 No.1

용리 양이온의 바뀜에 따른 양이온착물에 대한 용리거동을 조사하였다. 높은 농도의 KCl, NaCl 및 $NH_4C$l수용액을 용리제로 사용하였을 때 친수성착물의 용리부피는 $NH_4^+ > Na^+ > K^+$의 순으로 증가하였지만 낮은 농도에서 친수성착물의 용리부피는 $Na^+ > NH_4^+ > K^+의 순으로 증가하였다. 반면에 전 농도 범위의 KCl, NaCl 및 NH_4Cl수용액을 용리제로 사용하였을 때 소수성착물의 용리부피는 NH_4^+ > Na^+ > K^+의 순서로 증가하였다. 그리고 용리음이온이 바뀜에 따른 양이온착물에 대한 용리거동을 조사하였다. 친수성착물은 할로겐화 이온중의 Cl-과 강하게 회합하였지만 소수성착물은 I-과 더 강하게 회합하였다. SO_4^2$-는 비교적 수화가 강하게 일어나므로 친수성 착물과 회합이 강하였고 소수성착물과는 회합이 약하였다. We examined eluting behaviors for cationic complexes with the eluting cations. Retention volumes of hydrophilic complexes when eluted by the high concentration of aqueous KCl, NaCl and $NH_4Cl solutions, have been increased in the order NH_4^+ > Na^+ > K^+$, but in the low concentration, retention volumes of hydrophilic complexes bave been increased in the order $Na^+ > NH4^+ > K^+$. On the order hand, retention volumes of hydrophobic complexes when eluted by aqueous KCl, NaCl and $NH_4Cl solutions, have been increased in the order NH_4^+ > Na^+ > K^+$ in the whole concentration range. And we examined eluting behaviors for cationic complexes with the eluting anions. Hydrophilic complexes were associated more strongly with chloride ion among halide ions. However, hydrophobic complexes were associated more strongly with iodide ion. Sulfate ion, a highly hydrated anion, was associated more strongly with hydrophilic complexes than with hydrophobic complexes.

?? 착물의 구조적 특성

김복조,윤두천,박기훈,주언정,오창언 嶺南大學校 基礎科學 硏究所 1998 基礎科學硏究 Vol.18 No.-

Five-coordinated complex of Cu(Ⅱ) complex, [CuCl(1,10-phenanthroline)₂]·Cl·6H₂O·CH₃OH, was synthesized by adding an aqueous solution of Cu(Ⅱ) to a methanol solution of 1,10-phenanthroline. Its crystal structure was detemined by single crystal X-ray crystallography. Crystal data are are as fllow: [CuCl(phen)₂]·Cl·6H₂O·CH₃OH, monoclinic, space group C2/c (#15), a = 23.309(5), b = 30.270(6), c = 7.491(2) A, B = 97.83(2)˚, V = 5236 A³, Z = 8,2745 data with I >3σ(I) (R = 00.64, Rw = 0.087). In the crystal structure of ??, the Cu(Ⅱ)is five-coordianted with four nitrogen and one chlorine atom. The geometry around Cu(Ⅱ) is somewhat distorted trigonal bipyramid and Cu(Ⅱ) is locted nearly (0.0280 A˚) on the least-squares plane of the two nitrogen atoms and one chlorine atom.

trans-[Co(R,R-3,2,3-tet)X₂]+(X=Cl-,NO₂- )착물의 용매의존성에 의한 Circular Dichroism 스펙트라 연구

吳昌彦,尹斗千,朴成烈,李羲泰 嶺南大學校附設 基礎科學硏究所 1989 基礎科學硏究 Vol.9 No.-

When trans-[Co(R,R-3,2,3-tet)Cl₂]ClO₄and trans-[Co(R,R-3,2,3-tet)(NO₂)₂]CIO₄was dissolved in several organic solvents, the variation of CD spectra of above complexes differ from as a kinds of solvent. The patterns of variation in the spectra of above complexes depended on kinds of solvent. The source of CD spectra variations was interpreted by stereoselective solvation between terminal diamine N-H protons of the 3,2,3-tet ligand and the solvent.