Synthesis and spectral studies on mononuclear complexes of chromium(III) and manganese(II) with 12-membered tetradentate N2O2, N2S2 and N4 donor macrocyclic ligands

被引:132
作者
Chandra, S [1 ]
Kumar, R [1 ]
机构
[1] Univ Delhi, Dept Chem, Zakir Husan Coll, New Delhi 110002, India
关键词
D O I
10.1023/B:TMCH.0000020359.84853.72
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Complexes of Cr-III and Mn-II of general formula [Cr(L) X-2] X and [Mn(L) X-2] respectively were prepared from N2O2, N2S2 and N-4 donor macrocyclic ligands. The complexes have been characterized by elemental analysis, molar conductance measurements, spectral methods (i.r, mass, H-1-n.m.r, electronic spectra and e.p.r.) and magnetic measurements. The macrocyclic ligands have three different donating atom cavities, one with two unsaturated nitrogens and the other two have saturated nitrogen, oxygen and sulphur atoms. The effect of different donor atoms on the spectra and ligand field parameters is discussed. All the complexes show magnetic moments corresponding to a high-spin configuration. On the basis of spectral studies a six coordinated octahedral geometry may be assigned to these complexes.
引用
收藏
页码:269 / 275
页数:7
相关论文
共 27 条
[1]   Complexes of lead(II) and lanthanide(III) ions with a macrocyclic ligand containing a furan head unit. Crystal structure of a methanol inclusion compound of a novel macrocycle [J].
Adams, H ;
Bastida, R ;
deBlas, A ;
Carnota, M ;
Fenton, DE ;
Macias, A ;
Rodriguez, A ;
RodriguezBlas, T .
POLYHEDRON, 1997, 16 (04) :567-572
[2]   SYNTHESIS AND CHARACTERIZATION OF CHROMIUM(III) COMPLEXES OF SOME SEMICARBAZONES AND THIOSEMICARBAZONES [J].
CHANDRA, S ;
SHARMA, KK .
SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY, 1982, 12 (06) :647-658
[3]   SYNTHESIS AND SOLUTION PROPERTIES OF LANTHANUM(III), EUROPIUM(III), AND LUTETIUM(III) THP COMPLEXES AND AN X-RAY-DIFFRACTION STUDY OF A CRYSTAL CONTAINING 4 STEREOISOMERS OF A EUROPIUM(III) THP COMPLEX (THP = 1,4,7,10-TETRAKIS(2-HYDROXYPROPYL)-1,4,7,10-TETRAAZACYCLODODECANE) - METHYL-GROUPS IMPART RIGIDITY TO S,S,S,S-THP MACROCYCLIC COMPLEXES [J].
CHIN, KOA ;
MORROW, JR ;
LAKE, CH ;
CHURCHILL, MR .
INORGANIC CHEMISTRY, 1994, 33 (04) :656-664
[4]   The first oxidation of a Cr24+ paddlewheel complex to an isostructural stable product [J].
Cotton, FA ;
Daniels, LM ;
Huang, PL ;
Murillo, CA .
INORGANIC CHEMISTRY, 2002, 41 (02) :317-320
[5]  
Drago R.S., 1997, PHYS METHODS CHEM, P530
[6]   ACTIVATION OF OXYGEN AND MEDIATION OF DNA-DEGRADATION BY MANGANESE BLEOMYCIN [J].
EHRENFELD, GM ;
MURUGESAN, N ;
HECHT, SM .
INORGANIC CHEMISTRY, 1984, 23 (11) :1496-1498
[7]  
Figgis B.N., 1978, INTRO LIGAND FIELD T
[8]  
Guerriero P, 1995, CHEM REV, V95, P273
[9]   EXPERIMENTAL AND CRYSTAL FIELD STUDY OF THE ABSORPTION SPECTRUM AT 2000 TO 8000 A OF MANGANOUS PERCHLORATE IN AQUEOUS PERCHLORIC ACID [J].
HEIDT, LJ ;
KOSTER, GF ;
JOHNSON, AM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1959, 80 (24) :6471-6477
[10]  
Huheey JB., 1972, PRINCIPLES STRUCTURE, P363