Highly stabilized low-spin iron(III) and cobalt(III) complexes of a tridentate bis-amide ligand 2,6-bis(N-phenylcarbamoyl)pyridine. Novel nonmacrocyclic tetraamido-N coordination and two unusually short metal-pyridine bonds

被引：125

作者：

Ray, M ^{[1
]}

Ghosh, D ^{[1
]}

Shirin, Z ^{[1
]}

Mukherjee, R ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DEPT CHEM,KANPUR 208016,UTTAR PRADESH,INDIA

来源：

INORGANIC CHEMISTRY | 1997年 / 36卷 / 16期

关键词：

D O I：

10.1021/ic961118c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two novel low-spin complexes, [Et4N][FeL2.15H(2)O (1) and [Et4N[CoL2].2H2O (2) (L is a deprotonated bis-amide ligand), have been synthesized and characterized. Four relatively longer equatorial M-N-amide bonds and two significantly shorter axial M-N-py bonds are the noteworthy features of their X-ray structures. EPR and (34-300 K) magnetic studies of 1 confirm its low-spin character. Cyclic voltammetric studies reveal a highly stabilized M(III) state. For I a linear correlation between the Fe(III)-Fe(II) reduction potentials and the reciprocal of solvent dielectric constants is obtained.

引用

页码：3568 / &

页数：6

共 44 条

[11] Cotton F.A., 1988, ADV INORG CHEM, V5th, P721
[12] SYNTHETIC ANALOG APPROACH TO METALLOBLEOMYCINS .3. SYNTHESIS, CRYSTAL AND SOLUTION STRUCTURES, AND REDOX PROPERTIES OF BIS(N-(2-(4-IMIDAZOLYL)ETHYL)PYRIDINE-2-CARBOXAMIDO)COBALT(III) PERCHLORATE HYDRATE
DELANY, K
ARORA, SK
MASCHARAK, PK
[J]. INORGANIC CHEMISTRY, 1988, 27 (04) : 705 - 712
[13] DRAGO RS, 1977, PHYSICAL METHODS CHE, P492
[14] THE DETERMINATION OF THE PARAMAGNETIC SUSCEPTIBILITY OF SUBSTANCES IN SOLUTION BY NUCLEAR MAGNETIC RESONANCE
EVANS, DF
[J]. JOURNAL OF THE CHEMICAL SOCIETY, 1959, (JUN): : 2003 - 2005
[15] ELECTRON-PARAMAGNETIC-RESONANCE STUDIES ON THE FORMATION AND DECOMPOSITION OF THE OXYGENATED PRODUCT OF [CO-II(PMA)](+), A SYNTHETIC ANALOG OF COBALT(II) BLEOMYCIN
FARINAS, E
BAIDYA, N
MASCHARAK, PK
[J]. INORGANIC CHEMISTRY, 1994, 33 (25) : 5970 - 5973
[16] Figgis B. N., 1964, PROGR INORGANIC CHEM, DOI 10.1016/B978-0-08-012210-6.50064-8
[17] USE OF CONDUCTIVITY MEASUREMENTS IN ORGANIC SOLVENTS FOR CHARACTERISATION OF COORDINATION COMPOUNDS
GEARY, WJ
[J]. COORDINATION CHEMISTRY REVIEWS, 1971, 7 (01) : 81 - &
[18] SOLVENT EFFECTS ON HALF-WAVE POTENTIALS
GRITZNER, G
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (21) : 5478 - 5485
[19] THE SECONDARY AMINE GROUP OF BLEOMYCIN IS NOT INVOLVED IN INTRAMOLECULAR HYDROGEN-BONDING IN ACTIVATED BLEOMYCIN
GUAJARDO, RJ
TAN, JD
MASCHARAK, PK
[J]. INORGANIC CHEMISTRY, 1994, 33 (13) : 2838 - 2840
[20] [FE(PMA)]N+ (N = 1, 2) - GOOD MODELS OF FE-BLEOMYCINS AND EXAMPLES OF MONONUCLEAR NONHEME IRON COMPLEXES WITH SIGNIFICANT O2-ACTIVATION CAPABILITIES
GUAJARDO, RJ
HUDSON, SE
BROWN, SJ
MASCHARAK, PK
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (18) : 7971 - 7977

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