Copper

O’Brien, Paul

doi:10.1016/0010-8545(84)85049-3

Cited by 13 publications

(3 citation statements)

References 477 publications

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“…A wide variety of coordination geometries and stoichiometries is known for complexes of general formula [L m (CuX) n ] where L is a monodentate phosphine and X is generally a coordinating anion. Isolated [L m (CuX) n ] complexes have been the subject of many investigations and their chemistry has been reviewed periodically (Murphy, 1993;Akrivos et al, 1997;Hathaway, 1981Hathaway, , 1982Hathaway, , 1983Lippard et al, 1976;O'Brien, 1984).…”

Section: Commentmentioning

confidence: 99%

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)

Meijboom

2006

Acta Cryst E

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Section: Commentmentioning

confidence: 99%

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)

Meijboom

2006

Acta Cryst E

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“…Related literature, Square-pyramidal geometry for five coordinate Cu ~I is well established (O'Brien, 1984;Hathaway, 1982Hathaway, , 1983. Structures of similar phenanthroline complexes with an apical water molecule have been determined, but these have mixed atom coordination in the basal plane.…”

mentioning

confidence: 99%

Structure of aquabis(3,5-dimethylpyridine)(1,10-phenanthroline)copper(II) diperchlorate

Jeter¹,

Casteel²,

Condren³

et al. 1987

Acta Crystallogr C

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Cu(CTH9N)2(C12H8N2)(H20)](C104)2, M r =675.0, triclinic, P1, a=9.391 (2), b= 12.457 (2), c=13.448(3)A, a=74.81(2), fl=87.95(2), y= 79.46 (1) °, V= 1492.5 (7) A 3, Z= 2, Ox= 1.50gcm -3, 2(MoKa)=0.71073A, fl=9.7cm -1, F(000) = 694, T= 293 K, R = 0.040 for 3783 unique observed reflections. The four N atoms which are planar to within 0.020 (3) A and the O of the water molecule give rise to a square-pyramidal coordination geometry about the Cu atom, which is 0.237 (1)A above the basal plane. The planes of the two 3,5dimethylpyridine rings form dihedral angles of 83-3 and 110.5 o with the N-atom plane.

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“…Sua configuração eletrônica é [Ar]3d 10 4s 1 , apresentando compostos com estados de oxidação +1, +2, +3 e +4, sendo os dois primeiros os mais comuns [44]. Os complexos apresentam diversos números de coordenação (4-8), sendo 4, 5 e 6 os mais recorrentes [35,54]. Considerando Cu(II) (d 9 ), as geometrias podem ser das mais variadas, devido ao efeito Jahn-Teller (distorção do campo octaédrico) [55].…”

Section: O Cobreunclassified

Complexos de Ag(I) e Cu(II) com sulfonamidas

Nunes¹

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Ag(I) AND Cu(II) COMPLEXES WITH SULFONAMIDES: STRUCTURAL CHARACTERIZATION AND ANTIBACTERIAL ASSAYS. The present work describes the synthesis and spectroscopic characterization of two silver(I) complexes with the ligands sulfathiazole (AgC 9 H 8 N 3 O 2 S 2 , Ag-SFT) and sulfamethoxazole (AgC 10 H 10 N 3 O 3 S, Ag-SFM) and a novel copper(II) complex with sulfathiazole and 2,2'-bipyridine (CuC 28 H 26 N 8 O 5 S 4 , Cu[(SFT) 2 (bipy)]•H 2 O). The silver(I) complexeswere prepared from aqueous solutions of the ligands and silver nitrate in an alkaline medium, whereas the copper(II) complex was prepared from a methanolic solution of copper nitrate and bipyridine, and an alkaline solution of the SFT ligand in methanol.Elemental analysis results indicate a 1:1 (metal/ligand) ratio for the two silver(I)complexes. Elemental analysis and inductively coupled plasma optical emission spectroscopy suggest a 2:1:1 (SFT/copper/bipy) ratio for the copper(II) complex. Spectroscopic techniques such as1 H, 13 C and 15 N NMR and infrared spectroscopy indicate the coordination of the sulfonamides to Ag(I) and Cu(II) ions by the nitrogen atom of the SO 2 -N group. Crystal structures of the complexes Ag-SFT and [Cu(SFT) 2 (bipy)] were solved by powder X-ray diffraction. In the Ag-SFT complex the ligand is bridging two silver(I) ions in a dimeric structure, with the participation of the nitrogen atom of the thiazole heterocycle. In the [Cu(SFT) 2 (bipy)] complex, sulfathiazole has a bidentate coordination to copper through the nitrogens of SO 2 -N and thiazole groups. Both SFT ligands and bypiridine form a distorted octahedral geometry around the Cu(II) center. Antibacterial studies have shown antibacterial activity of Ag-SFT and Ag-SFM complexes over Gram positive and Gram negative bacteria, with MIC (minimum inhibitory concentration) values less or equal to 0.050 mmol L -1 . This activity is similar to that of silver-sulfadiazine. The [Cu(SFT) 2 (bipy)] complex did not show activity against Gram positive bacteria Staphylococcus aureus.For Gram negative bacteria MIC values are in the range 0.10-0.84 mmol L -1 . Both silver(I) and copper(II) complexes were more active than their precursors. Antioxidant studies of the copper(II) complex showed that it is capable of reducing the radical cation ABTS •+ in 13% and 20%, considering a complex molar percentage of 10% and 20%, respectively. The copper complex was not able to reduce DPPH • radical in the considered conditions. Abreviaturas, acrônimos e símbolosAbsabsorbância ABTS -2,2'-azino-bis-(ácido 3-etilbenzotiazolina-6-sulfônico) Ag-SFDsulfadiazina de prata Ag-SFMcomplexo de prata com sulfametoxazol Ag-SFTcomplexo de prata com sulfatiazol ATCC − American Type Culture Collection ATPtrifosfato de adenosina Bactrim ®sulfametoxazol + trimetoprima BHI − Brain Heart Infusion BHT -2,6-di-terc-butil-4-metilfenol; hidroxitolueno butilado bipy -2,2'-bipiridina [Cu(SFT) 2 (bipy)]complexo de cobre com sulfatiazol e bipiridina DHOágua em que um hidrogênio foi trocado por deutério DMSOdimetilsulfóxido DMS...

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Copper

Cited by 13 publications

References 477 publications

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)

Structure of aquabis(3,5-dimethylpyridine)(1,10-phenanthroline)copper(II) diperchlorate

Complexos de Ag(I) e Cu(II) com sulfonamidas

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Copper

Cited by 13 publications

References 477 publications

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ2P-dicopper(I)

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ2P-dicopper(I)

Structure of aquabis(3,5-dimethylpyridine)(1,10-phenanthroline)copper(II) diperchlorate

Complexos de Ag(I) e Cu(II) com sulfonamidas

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Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)

Di-μ-iodo-tris(tri-p-tolylphosphine)-1κP,2κ²P-dicopper(I)