Solid-state absorption spectra

FlG. 4. Solid state absorption spectra of BkBr3 in its orthorhombic and monoclinic modifications at room temperature. 

Fig. 5. Solid-state absorption spectra of BkF ) in its orthorhombic and trigonal forms at room temperature. Reprinted with permission from the J. Inorg. Nucl. Chem. 43, D. D. Ensor, J. R. Peterson, R. G. Haire, and J. P. Young, 1981, Pergamon Press, Ltd. (13).

Figure 24 The CT absorption band in solid anthracene-trinitrobenzene complex (1). Solid state absorption spectra of anthracene (2) and trinitrobenzene (3) are shown for comparison. After Ref. 109.

Solid-state absorption spectra of PmF3, PmCls, and PmBrs (reproduced with permission from W.K. Wiknarth et al, J. Less Common Metals, 1988, 141, 275). 

Solid-state absorption spectra of octahedral [UCl4(Bui2SO)2] (A) and 8-coordinate [U(Me2SO)2] Ft (B) (redrawn from J.G.H. DuPreez and B. ZeeUe, Inorg. Chim. Acta, 1989,161, 187 and reproduced by permission of Elsevier Science Publishers). 

As the sample is cooled, a second absorption band is observed in the range from 365 to 375 nm, which continues to grow upon further cooling. This behavior is completely reversible. This type of thermochromic transition is not observed in the solid-state absorption spectra of PDBS (iO) or PDPS 10,11). To understand this unusual absorption behavior of the polysilylenes in solution and in the solid state, a variety of studies have been directed toward the determination of the polymer chain conformation. 

Fig. 3a, b Temperature dependence of the solid-state absorption spectra of a NITBzImH b NITCN. Alphabetical labels denote maxima summarized in Table 2. Energy intervals in wavenumber units are indicated by horizontal double arrows. Traces are offset along the ordinate for clarity... 

Fig. 7 Solid-state absorption spectra of lanthanide-radical complexes at 5 K (solid lines) and 290 K (dotted lines). From top to bottom [Eu(hfac)3IMPy] (290 K), [Gd(hfac)3IMPy] (290 K, 5 K), [Gd(hfac)3IMBzImH] (290 K, 5 K). [Gd(hfac)3NITBzImH] (290 K, 5 K) and [Gd(NITBzImH)2(N03)2] (5 K). Alphabetical labels denote maxima summarized in Table 2. Traces are offset along the ordinate for clarity...

Figure 5 Solid-state absorption spectra of silicon and germanium phthalocyanine polymers.

Figure 6 Solid-state absorption spectra of PcGe(OH) and PcSi(OH)j, particles.

Figure 7 Solid state absorption spectra of (PcGeO), and (PcGe0(CH2)20). ...

Figure 8 Solid-state absorption spectra of PcGe0(CH2)40)j as a function of milling time in CHjClj and of (PcGeOfCHjjgO). ...

Figure 5.13 Solid state absorption spectra of PEt2Ph- or PEts-ligated compounds 1, 3, 4, and 6. For the measurements, single crystalline samples, previously pulverized in mineral oil, were placed between two quartz plates.

Figure 5.15 The UV-visible solid-state absorption spectra (mull in nujol) of the mixed-valence copper telluride clusters [Cui6Te9(PPh3)g] (7), [Cu23Tei3(PPh3)io] (8), and [Cu44Te23(PPhnPr2)i5] (9).

Zych and Drozdzyhski (1991) synthesized AjUBrg, A = K, Rb, from UBr dissolved in methylcyanide with a large excess of the group 1 bromide. The mixture was acidified with propionic acid and the U(IV) reduced with zinc amalgam. The precipitate which formed upon reduction, a methyl cyanide-hydrate, could be decomposed thermally in high vacuum to yield the anhydrous compounds structural data were not presented. Solid-state absorption spectra taken from thin films and magnetic-susceptibility measurements are consistent with the presence of an cation. The authors indicate that... 

Solid state absorption spectra are usefiil for evaluating relative tinctorial strength by comparison with reference standards. The absorption at Amm as well as the absorption sum over the visible range of the spectrum, must be taken in consideration when determining relative strength from absorption spectra. After accounting for tinctorial differences based on the absorption spectra, other color differences are best determined by using the CIELAB system for color measurement. 

Fig. 10.4 Solid-state absorption spectra of orthorhombic and hexagonal BkCl [108].

Figure 10.10. Solid state absorption spectra and X-ray powder difiraction patterns of (a) Sq-1, (b) Sq-5, (c) Sq-8, (d) Sq-9, (e) Sq-10 and (f) Sq-11. (Reproduced from ref 4, Copyright 1993, The American Chemical Society.)...

---