Synthesis and Co(III) complexes of the new tetradentate mixed-donor tetraamine ligand N-{2-[(2-pyridin-2-ylethyl)amino]ethyl}ethane-1,2-diamine (peda)

被引：3

作者：

Clarkson, AJ ^{[1
]}

Blackman, AG ^{[1
]}

机构：

[1] Univ Otago, Dept Chem, Dunedin, New Zealand

来源：

POLYHEDRON | 2006年 / 25卷 / 02期

关键词：

tetraamine; ligand; Co(III); kinetics; carbonate; hydrolysis;

D O I：

10.1016/j.poly.2005.06.039

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of 2,2'-diphthalimidodiethylamine with 2-vinylpyridine in H2O/MeOH and deprotection with HCl(aq) does not give the anticipated tripodal ligand N-2-(2-pyridylethyl)-NN-bis(2-aminoethyl)amine. Instead, the new linear tetradentate tetraamine ligand N-{2-[(2-pyridin-2-yiethyl)amino]ethyl}ethane- 1,2-diamine (peda) is formed. The synthesis and characterisation of the Co(III) complexes [Co(peda)O2CO]X center dot H2O (X = ClO4, I), trans-[Co(peda)Cl-2]ClO4 and trans-[Co(peda)Br-2]Br is reported, and an X-ray crystal structure of [Co(peda)O2CO]I center dot H2O shows the presence of the fm(s), isomer only. Rate data for the acid hydrolysis of [Co(peda)O2CO]ClO4 center dot H2O over the [H3O+] range 0.2-1.0 M (I= 1.0, NaClO4) are reported. Strict first-order kinetics are observed and the data are consistent with the currently accepted mechanism for the hydrolysis of bidentate carbonate complexes. (c) 2005 Elsevier Ltd. All rights reserved.

引用

收藏

页码：373 / 378

页数：6

相关论文

共 27 条

[1] The coordination chemistry of tripodal tetraamine ligands [J].

Blackman, AG .

POLYHEDRON, 2005, 24 (01) :1-39

[2] KINETICS AND MECHANISM OF RING-OPENING IN THE HYDROLYSIS OF COBALT(III) CARBONATE CHELATES [J].

BUCKINGHAM, DA ;

CLARK, CR .

INORGANIC CHEMISTRY, 1994, 33 (26) :6171-6179

[3] ABSENCE OF COMMON INTERMEDIATES IN THE INDUCED REACTIONS OF COBALT(III) COMPLEXES - HG-2+-INDUCED AND NO+-INDUCED AQUATION AND BASE HYDROLYSIS OF [CO(ME(TREN))(NH3)X]3+/2+ SPECIES - CRYSTAL AND STRAIN-ENERGY-MINIMIZED STRUCTURES OF THE S-ISOMER AND P-ISOMER OF THE [CO(ME(TREN))(NH3)CL]2+ ION [J].

BUCKINGHAM, DA ;

EDWARDS, JD ;

MCLAUGHLIN, GM .

INORGANIC CHEMISTRY, 1982, 21 (07) :2770-2787

[4] Tandem mass spectrometry of Cu(II) complexes: the effects of ligand donor group on dissociation [J].

Chaparro, AL ;

Vachet, RW .

JOURNAL OF MASS SPECTROMETRY, 2003, 38 (03) :333-342

[5] A new carbonate bridged dinuclear zinc complex with tripodal amine ligands [J].

Dietrich, J ;

Heinemann, FW ;

Schrodt, A ;

Schindler, S .

INORGANICA CHIMICA ACTA, 1999, 288 (02) :206-209

[6] SYNTHESIS OF THE NEW ASYMMETRIC TRIPODAL AMINE LIGAND ADAP - CRYSTAL-STRUCTURE OF [CO(ABAP)(O2NO)](CLO4)2 AND STABILITY AND REACTIVITY OF [CO(ABAP)(OH2)2]3+ TOWARD PHOSPHATE-ESTERS [J].

FANSHAWE, RL ;

BLACKMAN, AG .

INORGANIC CHEMISTRY, 1995, 34 (02) :421-423

[7] ASSOCIATION PHENOMENA .4. CATALYSIS OF IONIZATION OF DIHYDROXYACETONE PHOSPHATE BY MONOFUNCTIONAL, DIFUNCTIONAL, AND TRIFUNCTIONAL AMINES [J].

GETTYS, GA ;

GUTSCHE, CD .

BIOORGANIC CHEMISTRY, 1978, 7 (02) :141-159

[8] METAL-ION PROMOTED HYDROLYSIS OF POLYPHOSPHATES [J].

GEUE, RJ ;

SARGESON, AM ;

WIJESEKERA, R .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1993, 46 (07) :1021-1040

[9] A simple method for identifying and distinguishing between the diastereoisomers that result from wrapping polydentate ligands around octahedral metal ions [J].

Hartshorn, RM ;

House, DA .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1998, (15) :2577-2588

[10]

HASLEGRAVE JA, 1984, Patent No. 2131785