Tetra- and pentamanganese(II) macrocyclic complexes with bridging carboxylate groups: Product control by pretreatment of manganese acetate solutions

被引:33
作者
Brooker, S
McKee, V
Metcalfe, T
机构
[1] QUEENS UNIV BELFAST,DEPT CHEM,BELFAST BT9 5AG,ANTRIM,NORTH IRELAND
[2] UNIV CANTERBURY,DEPT CHEM,CHRISTCHURCH 1,NEW ZEALAND
关键词
crystal structure; manganese complex; macrocycle complex; carboxylate complex; photosystem II;
D O I
10.1016/0020-1693(96)05064-5
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Transmetallation of [Ba(H(2)L)(H2O)(2)](ClO4)(2) with manganese(II) acetate tetrahydrate in methanol can yield either the pentamanganese(II) complex [Mn-5(L)(2)(CH3COO)(2)(ClO4)(2)](ClO4)(2) (1) or the tetramanganese(II) complex [Mn-2(L)(CH3COO)](2)(ClO4)(2) (2), where H(2)L is a macrocyclic Ligand formed by a [2 + 2] condensation of 2,6-diacetylpyridine and 1,3-diaminopropan-2-ol. Both complexes have been characterized by X-ray crystallography; 1 . 2H(2)O, monoclinic, P2(1)/c a = 13.032(4), b = 20.677(5), c = 14.113(5) Angstrom, beta = 108.13(2)degrees; 2 . 5H(2)O . 2dmf (dmf = N,N-dimethylformamide), monoclinic, C2/c, a = 32.026(7), b = 14.623(6), c = 16.464(5) Angstrom, beta = 118.11(2)degrees. Once formed, the complexes are stable in solution and are not interconvertible. The identity of the complex formed depends on the treatment of the methanolic manganese(II) acetate solution before addition to the barium complex but not on the conditions of the transmetallation reaction. Transmetallation reactions using manganese(II) formate yielded only the tetramanganese complex [Mn-2(L)(HCOO)](2)(ClO4)(2) (3), this was also characterized crystallographically; 3 . H2O . 2dmf, monoclinic, C2/c, a = 27.057(8), b = 14.793(5), c = 16.126(4) Angstrom, beta = 97.56(2)degrees. Both the tetramanganese(II) complexes 2 and 3 contain Mn-4(alkoxide)(4) cubane cores.
引用
收藏
页码:171 / 179
页数:9
相关论文
共 26 条
[11]  
CHEN XM, 1991, INORG CHIM ACTA, V189, P3
[12]   MANGANESE CARBOXYLATE CHEMISTRY AND ITS BIOLOGICAL RELEVANCE [J].
CHRISTOU, G .
ACCOUNTS OF CHEMICAL RESEARCH, 1989, 22 (09) :328-335
[13]   GEOMETRIC CONTROL OF MANGANESE REDOX STATE [J].
DREW, MGB ;
HARDING, CJ ;
MCKEE, V ;
MORGAN, GG ;
NELSON, J .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1995, (10) :1035-1038
[14]   A MACROCYCLIC BINUCLEAR VANADIUM(III) COMPLEX WITH DI-MU-ALKOXO BRIDGING AND PENTAGONAL-BIPYRAMIDAL METAL COORDINATION - X-RAY CRYSTAL-STRUCTURE OF [V2L(H2O)4][CLO4]4.2H2O (H2L = 1,7,14,20-TETRAMETHYL-2,6,15,19-TETRA-AZA[7,7](2,6)-PYRIDINOPHANE-4,7-DIOL) [J].
DUTTON, JC ;
FALLON, GD ;
MURRAY, KS .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1990, (01) :64-65
[15]   HYDROGEN ATOM POSITIONS IN MANGANOUS FORMATE DIHYDRATE AND A REREFINEMENT OF COPPER FORMATE DIHYDRATE [J].
KAY, MI ;
ALMODOVA.I ;
KAPLAN, SF .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1968, B 24 :1312-&
[16]   RELAXATION EFFECTS IN MOSSBAUER-SPECTRA OF BRIDGED 7-COORDINATE FE-3+ PAIRS [J].
MCCANN, VH ;
WARD, JB ;
MCKEE, V ;
FAULALO, K ;
JONES, DH .
HYPERFINE INTERACTIONS, 1990, 56 (1-4) :1465-1470
[17]   SYNTHESIS AND X-RAY STRUCTURE OF A BICOPPER(II) SCHIFF-BASE MACROCYCLIC COMPLEX HAVING A SINGLE ENDOGENOUS ALKOXY BRIDGE [J].
MCKEE, V ;
SMITH, J .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1983, (23) :1465-1467
[18]  
Pecoraro V.L., 1992, MANGANESE REDOX ENZY
[19]   SYNTHESIS AND CHARACTERIZATION OF TRINUCLEAR IRON(II) AND MANGANESE(II) CARBOXYLATE COMPLEXES - STRUCTURAL TRENDS IN LOW VALENT IRON AND MANGANESE CARBOXYLATES [J].
RARDIN, RL ;
POGANIUCH, P ;
BINO, A ;
GOLDBERG, DP ;
TOLMAN, WB ;
LIU, SC ;
LIPPARD, SJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (13) :5240-5249
[20]  
SHELDRICK GM, 1984, SHELXTL USER MANUAL