Infrared and Raman spectra of heterocyclic compounds—III

Strukl, J.S.; Walter, J. L.

doi:10.1016/0584-8539(71)80027-2

Cited by 110 publications

(30 citation statements)

References 18 publications

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“…Due to the abundant literature regarding the complexes of bipy, only illustrative references are quoted here . The interpretation of the spectra given by the authors was based on those published for bipy and other heteroaromatic compounds (7,(28)(29)(30). The bands in the range 3150-3050 cm-' have been assigned to the C-H stretches, in the range 1650-1300 cm-' to C-C and C-N stretches of the ring and the deformations of the C-C-H angles, in the range 1250-1000 cm-' to the in-plane deformations of the C-H bonds, in the range 1030-990 cm-' to the breathing vibrations of the ring, in the range 980-700 cm-' to the out-of-plane deformations of the C-H bonds, in the range 650-600 cm-' to the in-plane ring bending, and in the range 750-400 cm-' to the out-of-plane deformations of the ring.…”

Section: Vibrational Spectramentioning

confidence: 99%

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy

Arnaudet¹,

Bougon²,

Ban³

et al. 1990

Can. J. Chem.

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. Can. J. Chem. 68, 507 (1990). WOF4.bipy was prepared from the reaction of WOF4 with 2,2'-bipyridyl (bipy) in the melt or in solution in CHzCll or CHXN.The adduct, which is not moisture-sensitive at room temperature, was characterized by elemental analysis, X-ray powder data, and vibrational spectroscopy. WOF4. bipy is almost insoluble in the usual organic solvents, and the species which were observed in CH2C12 or CH3CN by 'H NMR and Rarnan spectroscopy resulted from the dismutation of WOF4. bipy into W02F2. bipy and WF6. bipy .This transformation in solution was revealed by the slow growing of crystals identified as W02F2. bipy and by the 'H NMR spectrum which displayed lines assigned to the independently synthesized and characterized species WF6.bipy. Unlike the WOF4 adduct, the tungstyl adduct is moisture-sensitive, its crystal structure showed that the tungsten atom is surrounded by a very distorted octahedron of ligands with each nitrogen of the bipy ligand trans to one oxygen atom and the two fluorine atoms trans to each other. The space group, unit cell parameters, and R factor for CIOH8F2N202W are as follows: monoclinic, P2',, (No. 14) (alternate setting of the standard space group P2,/,), a = 8.637(1) A, b = 13.823(2) .A, c = 9.526(2) .A, P = 109.98(2)", V = 1068.8(6) .A3, Z = 4, and R = 0.044 for 806 (1 > 3u(1)) of 1471 total reflections and 94 parameters.

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Section: Vibrational Spectramentioning

confidence: 99%

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy

Arnaudet¹,

Bougon²,

Ban³

et al. 1990

Can. J. Chem.

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“…The tentative assignment of the vibrational peaks, shown in Table 1, was based on and related studies (9)(10)(11). There is no evidence for vibrational modes of pic-or picOH-in the resonance Raman spectra, indicating that the absorption band around 490nm arises from MLCT transitions in the Run-bipy chromophore.…”

Section: Resultsmentioning

confidence: 99%

“…The solid was collected on a filter and washed with cold HzO and EtzO. (Found: C,41.1;H,2.8;N,9.6;C46HglN906PzF6Ru calcd: C,42.1;H,3.1;N,9.6%. )…”

Section: -4285 9 1994 Chapman and Hallmentioning

confidence: 99%

Spectroscopic and electrochemical studies on (2-hydroxypicolinate)-bis(2,2′-bipyridine)ruthenium(II) and related complexes

Constantino

Oliveira

Santos

et al. 1994

Transition Met Chem

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The synthesis, spectra and electrochemistry of [Ru(bipy)/-(picOH)] § and {#-picO-[Ru(bipy)2]2} 2 § (bipy=2,2'-bipyridine and picOH = 3-hydroxypieolinate ion) are described. The spectroscopic properties in the visible region are dominated by the intense Ru--, bipy chargetransfer transitions. In the binuclear complex, the two [Ru(bipy)2L] 2 + moieties are nonequivalent, exhibiting E~/2 = 0.69 and 1.20 V versus s.h.e. The partially oxidized species exhibits a weak intervalence transfer band at 1085nm, and is consistent with a Robin-Day class II mixed valence complex.

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“…The presence of bpy and phen molecules is proved by absorption bands from stretching m(C-H) vibrations in the 3109-3005 cm -1 range, from stretching m(C=N), m(C=C), m(C-C) and m(C-N) vibrations in the 1605-1250 cm -1 range and from deformation c(C-H) and torsion vibrations in the 900-634 cm -1 range (Table 2) [16].…”

Section: Spectral Studymentioning

confidence: 99%

Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L)2X]C(CN)3 complexes (L = 2,2′-bipyridine or 1,10-phenanthroline; X = Cl−, Br− or CH3COO−)

Petrovič

Potočňák

Ráczová

et al. 2015

Transition Met Chem

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Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L) 2 X]C(CN) 3 complexes (L 5 2,2 0 -bipyridine or 1, 10-phenanthroline; X 5 Cl 2 , Br 2 or CH 3 COO 2 ) Abstract Five new ionic [Cu(L) 2 X]C(CN) 3 (L = 2,2 0 -bipyridine (bpy) or 1,10-phenanthroline (phen), X = Cl -, (4) and [Cu(phen) 2 Br 0.7 (CH 3 COO) 0.3 ]C(CN) 3 Á0.5H 2 O (5), have been synthesized and characterized by IR and UV-Vis spectroscopy. X-ray structural analysis revealed that the structures of all discussed compounds consist of [Cu(L) 2-X] ? complex cations and uncoordinated C(CN) 3 -counteranions; water molecules were found in 2, 3, 4 and 5; a molecule of ethanol was found in 4, too. The shapes of coordination polyhedra around the copper atoms, which are pentacoordinated by two bidentate bpy or phen molecules and Cl -, Br -or CH 3 COO -ligands monodentately coordinated in the equatorial plane, are distorted trigonal bipyramids. Structures of 1-5 are stabilized by weak p-p interactions and by hydrogen bonds. Magnetic properties of complexes 1-4 are characterized by the presence of weak antiferromagnetic exchange couplings.

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Infrared and Raman spectra of heterocyclic compounds—III

Cited by 110 publications

References 18 publications

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy

Spectroscopic and electrochemical studies on (2-hydroxypicolinate)-bis(2,2′-bipyridine)ruthenium(II) and related complexes

Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L)2X]C(CN)3 complexes (L = 2,2′-bipyridine or 1,10-phenanthroline; X = Cl−, Br− or CH3COO−)

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Infrared and Raman spectra of heterocyclic compounds—III

Cited by 110 publications

References 18 publications

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF4•bipy and WO2F2•bipy; crystal structure of WO2F2•bipy

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF4•bipy and WO2F2•bipy; crystal structure of WO2F2•bipy

Spectroscopic and electrochemical studies on (2-hydroxypicolinate)-bis(2,2′-bipyridine)ruthenium(II) and related complexes

Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L)2X]C(CN)3 complexes (L = 2,2′-bipyridine or 1,10-phenanthroline; X = Cl−, Br− or CH3COO−)

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2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy

2,2′-Bipyridyl adducts of tungsten oxide fluorides: preparation and characterization of WOF_4•bipy and WO₂F_2•bipy; crystal structure of WO₂F_2•bipy