Mixed complexes of 6-aminouracil derivatives

Synthesis, Characterization and Antimicrobial Studies of Novel Binuclear Transition Metal Complexes of Schiff Base Derived from 1-Amino-5-methyl-2,6-pyrimidine-dione and 2,3-Butanedione

“…The electronic absorption spectrum of [Cu 2 (L) 2 transitions, respectively. These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 .…”

“…These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . The obtained magnetic moment value (µeff) for Cu(II) complex is 1.56 µB indicates that magnetic exchange occurs between the two copper sites and also support distorted octahedral geometry of binuclear Cu(II) complex.…”

“…The absorption spectra of complex also display a band at 378 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . These transitions are consistent with an octahedral geometry of Ni(II) complex 25 .…”

Synthesis, Characterization and Antimicrobial Studies of Novel Binuclear Transition Metal Complexes of Schiff Base Derived from 1-Amino-5-methyl-2,6-pyrimidine-dione and 2,3-Butanedione

“…The electronic absorption spectrum of [Cu 2 (L) 2 transitions, respectively. These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 .…”

“…These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . The obtained magnetic moment value (µeff) for Cu(II) complex is 1.56 µB indicates that magnetic exchange occurs between the two copper sites and also support distorted octahedral geometry of binuclear Cu(II) complex.…”

“…The absorption spectra of complex also display a band at 378 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . These transitions are consistent with an octahedral geometry of Ni(II) complex 25 .…”

Synthesis, spectroscopic and biological studies on the new symmetric Schiff base derived from 2,6-diformyl-4-methylphenol with N-aminopyrimidine

“…In the UV-Vis region, the complexes showed bands at approximately 290 nm and in the range 340-410 nm as the weaker bands. The weak bands were attributed to intramolecular charge transfer transition [24] from the pp orbital on the phenolate oxygen to the empty d orbitals of the metal.…”

Synthesis, characterization and antiproliferative behavior of tricarbonyl complexes of rhenium(I) with some 6-amino-5-nitrosouracil derivatives: Crystal structure of fac-[ReCl(CO)3(DANU-N5,O4)] (DANU=6-amino-1,3-dimethyl-5-nitrosouracil)

“…These compounds usually bind to metal ions in bidentate mode, through the nitrogen atom of the 5-nitroso group and either the exocyclic oxygen atom attached in the 4 position of the uracil or the nitrogen atom from the 6-amino group when it is deprotonated. These coordination behaviors, which gives five-membered chelate ring, has been found in several metal complexes with 6-amino-5-nitrosouracil derivatives [21][22][23][24][25].…”

Synthesis, Characterization and Antimicrobial Studies of Novel Binuclear Transition Metal Complexes of Schiff Base Derived from 1-Amino-5-methyl-2,6-pyrimidine-dione and 2,3-Butanedione

“…The electronic absorption spectrum of [Cu 2 (L) 2 transitions, respectively. These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 .…”

“…These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . The obtained magnetic moment value (µeff) for Cu(II) complex is 1.56 µB indicates that magnetic exchange occurs between the two copper sites and also support distorted octahedral geometry of binuclear Cu(II) complex.…”

“…The absorption spectra of complex also display a band at 378 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . These transitions are consistent with an octahedral geometry of Ni(II) complex 25 .…”

Synthesis, spectroscopic and biological studies on the new symmetric Schiff base derived from 2,6-diformyl-4-methylphenol with N-aminopyrimidine

“…In the UV-Vis region, the complexes showed bands at approximately 290 nm and in the range 340-410 nm as the weaker bands. The weak bands were attributed to intramolecular charge transfer transition [24] from the pp orbital on the phenolate oxygen to the empty d orbitals of the metal.…”

Synthesis, characterization and antiproliferative behavior of tricarbonyl complexes of rhenium(I) with some 6-amino-5-nitrosouracil derivatives: Crystal structure of fac-[ReCl(CO)3(DANU-N5,O4)] (DANU=6-amino-1,3-dimethyl-5-nitrosouracil)

“…These compounds usually bind to metal ions in bidentate mode, through the nitrogen atom of the 5-nitroso group and either the exocyclic oxygen atom attached in the 4 position of the uracil or the nitrogen atom from the 6-amino group when it is deprotonated. These coordination behaviors, which gives five-membered chelate ring, has been found in several metal complexes with 6-amino-5-nitrosouracil derivatives [21][22][23][24][25].…”

Synthesis, Characterization and Antimicrobial Studies of Novel Binuclear Transition Metal Complexes of Schiff Base Derived from 1-Amino-5-methyl-2,6-pyrimidine-dione and 2,3-Butanedione

“…The electronic absorption spectrum of [Cu 2 (L) 2 transitions, respectively. These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 .…”

“…These transitions are consistent with a distorted octahedral geometry of Cu(II) complex 24 . The spectra of Cu(II) complex further display a shoulder at 354 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . The obtained magnetic moment value (µeff) for Cu(II) complex is 1.56 µB indicates that magnetic exchange occurs between the two copper sites and also support distorted octahedral geometry of binuclear Cu(II) complex.…”

“…The absorption spectra of complex also display a band at 378 nm assigned to charge transfer transition from the ligand to metal ion (LMCT) 24 . These transitions are consistent with an octahedral geometry of Ni(II) complex 25 .…”

Synthesis, spectroscopic and biological studies on the new symmetric Schiff base derived from 2,6-diformyl-4-methylphenol with N-aminopyrimidine

“…In the UV-Vis region, the complexes showed bands at approximately 290 nm and in the range 340-410 nm as the weaker bands. The weak bands were attributed to intramolecular charge transfer transition [24] from the pp orbital on the phenolate oxygen to the empty d orbitals of the metal.…”

Synthesis, characterization and antiproliferative behavior of tricarbonyl complexes of rhenium(I) with some 6-amino-5-nitrosouracil derivatives: Crystal structure of fac-[ReCl(CO)3(DANU-N5,O4)] (DANU=6-amino-1,3-dimethyl-5-nitrosouracil)

“…These compounds usually bind to metal ions in bidentate mode, through the nitrogen atom of the 5-nitroso group and either the exocyclic oxygen atom attached in the 4 position of the uracil or the nitrogen atom from the 6-amino group when it is deprotonated. These coordination behaviors, which gives five-membered chelate ring, has been found in several metal complexes with 6-amino-5-nitrosouracil derivatives [21][22][23][24][25].…”