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Titolo:
SYNTHESIS OF COPPER AND SILVER COMPLEXES WITH PENTADENTATE N,S AND HEXADENTATE N,O CHELATE LIGANDS - CHARACTERIZATION AND CRYSTAL-STRUCTURES OF (CU-2[C6H4(SO2)NC(O)](2)(C5H5N)4), (CU-2[C5H3N(CHNC6H4SCH3)(2)](2))(PF6)2, AND (AG[C5H3N(CHNC6H4SCH3)(2)])PO2F2
Autore:
FESSLER TU; HUBENER R; STRAHLE J;
Indirizzi:
UNIV TUBINGEN,INST ANORGAN CHEM,MORGENSTELLE 18 D-72076 TUBINGEN GERMANY UNIV TUBINGEN,INST ANORGAN CHEM D-72076 TUBINGEN GERMANY
Titolo Testata:
Zeitschrift fur anorganische und allgemeine Chemie
fascicolo: 9, volume: 623, anno: 1997,
pagine: 1367 - 1374
SICI:
0044-2313(1997)623:9<1367:SOCASC>2.0.ZU;2-C
Fonte:
ISI
Lingua:
GER
Soggetto:
MOLECULAR-STRUCTURES;
Keywords:
COPPER(I) COMPLEXES; COPPER(II) COMPLEXES; SILVER(I) COMPLEXES; POLYDENTATE N,O- AND N,S-DONOR LIGANDS; X-RAY CRYSTAL STRUCTURES; MAGNETIC PROPERTIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
T.U. Fessler et al., "SYNTHESIS OF COPPER AND SILVER COMPLEXES WITH PENTADENTATE N,S AND HEXADENTATE N,O CHELATE LIGANDS - CHARACTERIZATION AND CRYSTAL-STRUCTURES OF (CU-2[C6H4(SO2)NC(O)](2)(C5H5N)4), (CU-2[C5H3N(CHNC6H4SCH3)(2)](2))(PF6)2, AND (AG[C5H3N(CHNC6H4SCH3)(2)])PO2F2", Zeitschrift fur anorganische und allgemeine Chemie, 623(9), 1997, pp. 1367-1374

Abstract

In the course of the reaction of copper(II)-acetate monohydrate with 2,2'-bisbenzo[d][1,3]thiazolidyl in methanol the organic component is transformed to N,N'-bis-(2-thiophenyl)ethanediimine and subsequently oxidized to the N,N'-bis-(2-benzenesulfonyl)ethanediacid H4BBSED, whichcoordinates in its deprotonated form two Cu2+ ions. Crystallisation from pyridine/n-hexane yields [Cu-2(BBSED)(py)(4)].MeOH. It forms triclinic crystals with the space group P1 and a = 995.5(2) pm, b = 1076.1(3) pm, c = 1120.7(2) pm, alpha = 104.17(1)degrees, beta = 105.28(1)degrees, gamma = 113.10(1)degrees and Z=1. In the centrosymmetrical dinuclear complex the copper ions are coordinated in a square-pyramidal arrangement by three nitrogen and two oxygen atoms. The Jahn-Teller effect causes an elongation of the axial bond by approximately 30 pm. The reactions' of the pentadentate ligand ,6-Bis-[(2-methylthiophenyl)-2-azaethenyl]pyridine BMTEP with salts of copper(I), copper(II) and silver(I) yield the complexes [Cu-2(BMTEP)(2)](PF6)(2), [Cu(BMTEP)]X-2 (X=BF4-, ClO4- and [Ag(BMTEP)IX (X = PO2F2-, ClO4-). [Cu-2(BMTEP)(2)](PF6)(2) crystallizes from acetone/diisopropyl-ether in form of monoclinic crystals with the space group C2/c, and a = 1833.2(3) pm, b = 2267.30(14) pm, c = 1323.5(2) pm, beta = 118.286(5)9 and Z = 4. In the dinuclear complex cation with the symmetry C-2 the copper ions are tetrahedrally coordinated by two bridging BMTEP ligands. The Cu-Cu distance of 278.3 pm can be interpreted with weak Cu-Cu interactions which also manifest itself in a temperature independent paramagnetism of 0.45 B.M.. The monomeric silver complex [Ag(BMTEP)]PO2F2 crystallizes from acetone/thf in the triclinic space group P (1) over bar with a = 768.7(3)pm, b = 1074.0(5)pm, c = 1356.8(5)pm, alpha = 99.52(2)degrees, beta = 96.83(2)degrees, gamma = 99.83(2)degrees and Z = 2. The central silver ionis coordinated by one sulfur and three nitrogen atoms of the ligand in a planar, semicircular arrangement. The bond lengths Ag-N = 240.4-261.7 and Ag-S = 257.2 pm are significantly elongated in comparison withsingle bonds.

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Documento generato il 04/12/20 alle ore 19:03:41