Spectra of i

The UV spectra of —I—M 2-substituted thiophenes show two almost overlapping high-intensity bands both of which are displaced, with increasing conjugating power of the substituent, toward longer wavelengths. The extinction increases in the same order as in the... 

Figure 16-26. Normalized phololumincsccncc spectra of (I) Oocl-OPV5, (2) Oocl-OPV5-CN and (3) Ooct-OPV5-CN" single crystals. Inset corresponding PL-decay curves (semi log plol).

Visible and near-IR spectra of I are shown in Figures 4 and 5, respectively. Both regions of the spectra are distinctive due to the sharpness and abundance of absorptions. At this time a detailed analysis of the spectrum of I has not been carried out. However, qualitative comparison with some spectra of Pu(IV) compounds does reveal some interesting relationships. 

Fig. 7.32 Mossbauer spectra of (i) ruthenium red, [Ru302(NH3)i4]Cl6 and (ii) ruthenium brown, [Ru302(NH3)i4]Cl7, fitted with a side-by-side (a) and an overlapping (b) arrangement of two quadrupole patterns (from [116])...

FIGURE 11.18. EPR spectra of (i) Cu(salen) and (ii) Cu(5-Cl-salen) at 77 K (a) neat polycrystalline sample, (b) frozen CHas/CHsCN (3 1) solution, (c) frozen DMF solution and (d) zeolite-Y-encapsulated complexes. Dotted line (e) is a blown-up trace of curve (d). 

The samples were excited at 549 nm and the resultant fluorescence emission spectra were digitized. The emission spectra of i-2 differed only in relative intensity. A direct comparison between the integrated and normalized fluorescence spectra of i-2 was made with that of ZnTPP. The data normalized to the known fluorescence quantum yield of ZnTPP(ii) are listed in Table II. Fluorescence lifetimes were determined on 10 M solutions of... 

Fig. 1 Deconvolution of simulated noiseless data using the Jansson weighting scheme. Trace (a) is the original spectrum o x trace (b) the convolved spectrum i x). Traces (c) and (d) are the power and phase spectra of o(x), traces (e) and (f) the power and phase spectra of i(x), traces (g) and (h) the power and phase spectra of the error spectrum E(jc). Traces (i)-(m) are the deconvolution result, the power and phase spectra of the deconvolution result, and the power and phase spectra of the error spectrum, respectively, after 10 iterations with r(jjjax = 1.0. Traces (n)-(r) are the same results after 20 additional iterations with r ax= 2.0. Traces (s)-(w) are the same results after 20 additional iterations with r(3.5. Traces (x)-(bb) are the same results after 20 additional iterations with r( Jax= 5.0.

Figure 1. 1R spectra of i, aquatic river humus 2, chlorinated aquatic river humus 3, organic compounds from drinking water... 

Figure 77 (a) The electronic reflectance spectra of (i) K2Pb[Cu(N02)6]—three-dimensional dynamic (--------), fli)... 

Figure 13.4 (A) Structure of poly-(Ru(II) tris-[5,5 -dicarbo(3-acrylatoprop-l-oxy)-2,2 -bipyridine]). (B) UV/visible spectra of (I) thermally polymerized on Sn02 transparent electrode as a function of applied potential. Film thickness —0.2 pm. Potential measured against Ag/Ag+ (0.1 M). [From Ref. 47.]...

The H-NMR Spectra of I-Hydroxy-2-Methylindole (78) and 2-Methyl-3W-Indole I-Oxide (80) in 8 (J in Hertz) from Internal Me4Si [70JCS(C)I067]... 

The cesium salt of (B7C2H9)2Co (I) can be rearranged at 315°C in 24 hours to an isomeric product (III) in almost quantitative yield (6). The cyclopentadienyl derivative (A) can also be rearranged under the same conditions to a new isomer (B). The low-field doublet present in the nB NMR spectra of (I) and A is not seen in the spectra of the products. The... 

Fig. 7. Calculated and measured emission spectra of I. i YI4 Pr from Peijzel et al. (2005a). The bars in the upper spectrum give information on the positions and intensities calculated for the zero-phonon lines, while the spectrum...

Baker and Long58) have measured the infrared spectra of I, II, and III at various temperatures between 300 and 77 K. They focussed their interest primarily on the C-N stretching band of NCS- and NCSe", which they found at room temperature as a strong doublet at 2060—2070 cm-1. On cooling, the intensity of this doublet decreased in favour of a new doublet which appeared at 2100—2110 cm-1 (see Fig. 4). The doublet at 2060 cm-1 was assigned by the authors to the high-spin (sTj) isomer, and that at 2100 cm-1 to the low-spin ( Aj) isomer. Fig. 5 shows the relative intensity of the 2100 cm-1 doublet of I, II, and III as a function of temperature. 

Chromatograms of the optical resolution of (I) and (II) Eire shown in Figure. 1. Compound (II) is completely resolved into its enantiomers chromatographically. The g-factor remains at its constant optimum value throughout the elution band of each enantiomer. Compound (I) in contrast is incompletely resolved, giving a single absorbance elution band, but a double bisignate difference absorbance band. The fractions of (I) eluted in the volume between the vertical dashed lines are incompletely resolved. Values for the g-max factors have been determined from the CD and absorption spectra of (I) and (II). 

Figure 13.5 Fluorescence spectra of I ( A -fluorescein in the absence (a) and presence of increasing concentrations of LTF. Spectrum j corresponds to 1.223 gM of LTF. kex = 495 nm.

FIGURE 9. Panel a shows the TEM image of 5.5 nm CdS nanocrystals obtained at room temperature at the interface. Insets give the SAED pattern and the particle size distribution. Panel b shows the Uv-visible absorption spectra of (i) 3.4 nm and (ii) 5.5 nm CdS nanocrystals and (iii) the photoluminescence spectrum of 5.5 nm CdS nanocrystals. Modified with permission from ref 28. Copyright 2003 Elsevier. 

The mass spectra of i/r-akuammigol (271) and related compounds proved very helpful in determining the structure of i/r-akuammigine and derivatives.159,160 The proposed formula of picraline160 was shown by chemical and mass spectrometric arguments to be untenable and was revised.161 Mass spectrometry also aided in the structure determination of the related alkaloid aspidodasycarpine.162... 

Matrix IR spectra of I-germacyclopent-3-enylidene and its de analogue were obtained during a study of the photochemical interconversions shown in equation 6 . ... 

Che and Nafie (1992) report the isolation of ROA invariants and illustrate the technique using the spectra of (-i-)-rraw -pinane and (-)-a-pinene as examples. Later the same year, Hecht (1992) challenges their results and proposes variable scaling factors for the different ROA bands depending on their depolarization ratio. To reach this results, he emphasizes the importance of the inclusion of the cone of collection into the procedure for the isolation of Raman optical activity invariants. 

Figure 1. Fluorescence spectra of I in cyclohexane (6),frans-decalin(8), di-ethylether (1), ethanol (7), acetone (3), and acetonitrile (4).

In recent years, the study of D-A molecules containing the dialkylamino group as an electron donor in supersonic jet conditions has received considerable interest. Particularly extensive investigations have been performed for CDMA (I) and its derivatives (e.g., II-V). It has been reported by Kobayashi et al. [81a], Phillips and co-workers [82], Peng et al. [83] and Bernstein and co-workers [84] that jet-cooled I did not show the excited CT state formation. Figure 8 presents LIE emission and excitation spectra of I and its two o-methylated derivatives (II, III) [90a]. Compounds I [81a, 82, 83, 85, 86, 88-91] and II [90] exhibit the structured LIE excita-... 

Figure 2. Heteronuclear Single Quantum Correlation Spectra of I N-rCRALBP with and without 11-c/s-retinaldehyde. Results are shown from a gradient-enhanced sensitivity-enhanced heteronuclear single quantum correlation (GESE-HSQC) NMR experiment. The experiment correlates directly bonded pairs in rCRALBP. The correlation map for rCRALBP (29 mg/ml) with bound 11-c/s-retinaidehyde (heavy lines)...

---