Raman spectral studies

Walrafen G E 1967 Raman spectral studies of the effects of temperature on water structure J. Chem. Phys. 47 114-26... 

In aqueous solution the formation constants of Cu(5-H)", (5 is 2-formylpyridine thiosemicarbazone) have been studied in relation to the possible reaction of this ion with biological systems [166]. A pre-resonance Raman spectral study of... 

Nielsen, C. J. etal., J. Mol. Struct., 1987, 16(1-2), 41-56 Precautions appropriate to a potentially explosive compound were observed during synthesis and handling. Electron diffraction studies on the vapour, and IR, NMR and Raman spectral studies on the vapour, liquid and solid (—183°C) phases were effected without incident. 

I.r. and Raman spectral studies of the cage compound 0s404(C0)i2 have indicated a tetrahedral symmetry in solution. A partial normal-co-ordinate analysis gave approximate CO stretching force constants. An interesting... 

G. Penel, G. Leroy, C. Rey, E. Bres, Micro-Raman spectral study of the PO4 and CO3 vibrational modes in synthetic and biological apatites, Calcif. Tissue Int. 63 (1998) 475-481. 

Raman spectral studies of solutions of metal nitrates in liquid ammonia show a coordination number of four for zinc and mercury, but six for cadmium. Dissolution of Znd2 and InCl3 in a 1 2 ratio in liquid HCN yields [Zn(NCH)6] [InCLJ2 with HCN coordination via nitrogen.137 A Raman study of the compounds [Cd(NH3)6]X2 (X = C1, Br or I) has been reported.138 Structural determinations of A2Zn(NH2)4 (A = Rb or K) reveal monomeric tetrahedral anions.139... 

Raman spectral studies of the species [MX ]("-2)- (n = 2-4 M = Zn, Cd or Hg X = Cl, Br or I) in anhydrous tributyl phosphate have been reported.1001 For the MX2 molecules, sufficient metal dihalide-solvent interaction exists to suggest bent X—M—X species with Cjv rather than D< h symmetry. The effect appears most marked for zinc(II) and least marked for mercury(II)... 

A structural determination1057 of CsCdCl3 reveals a polymer containing two distinct types of cadmium ion. One is surrounded by six chloride ions in a near perfect octahedron (Cd—Q = 2.60 A), while the other is surrounded by two distinct groups of chloride ions (Cd—Cl = 2.64, 2.59 A) in a distorted octahedran. Alternatively, Raman spectral studies on [Pr"N] [CdX3] (X = Cl, Br or I) indicate discrete [CdX3] anions possessing Qtv symmetry.1058... 

Raman-spectral studies of cerebrosides in the solid and gel phases have been reported.201 Assignments of frequencies, and comparison of peak heights for characteristic vibrations, allowed elucidation of the conformation of both the chain and head-group portions of these molecules. Interpretation of the spectral data was found in agreement with calorimetric and X-ray structural data. 

Infrared and Raman Spectral Studies of n Complexes Formed between Metals and C H Rings Heinz P. Fritz Author Index—Subject Index... 

Schwendt, P. and M. Pisarcik. 1990. Raman spectral study on the structure of vana-dium(V) oxodiperoxo complexes in aqueous solution. Spectrochim. Acta 46A 397-399. 

Bischoff W.D., Sharma S.K., and Mackenzie F.T. (1985) Carbonate ion disorder in synthetic and biogenic magnesian calcites A Raman spectral study. Amer. Mineral. 71, 581-589. 

In contrast, treatment of [Rh2(MeC02)4] with pyridine-2-thiol, which exists as the tautomer LH (42), does not cause displacement of co-ordinated acetate but produces [Rh2(MeC02)4(LH)2] 168 its i.r. spectrum confirms S-co-ordination. A Raman spectral study has also been reported for rhodium(n) acetate and other dinuclear species, giving information on the Rh—Rh bond strength.169... 

The compounds are characterized by 19F and H NMR, IR, and Raman spectral studies. Compounds of the type SF5ORf are thermally very stable. They do not yield the perfluorovinyl derivative, SF5OCF=CF2, on dehalogenation as is the case when CF3OCF=CF2 is formed from CF30CFC1CF2C1 (94). 

CgH3R)2f- [R = H (=bdt), R = 4-Me (=tdt), R = 3-SiPh3]. These complexes have distorted octahedral structures with cis-dioxo groups, and resonance Raman spectral studies showed that the sulfur ligands exerted a trans... 

Wang RP, Zhou GW, Liu YL, Pan SH, Zhang HZ, Yu DP, Zhang Z (2000) Raman spectral study of silicon nanowires high-order scattering and phonon confinement effects. Phys Rev B... 

Infrared and Raman spectral studies of 77-complexes formed between metals and C H rings Vibrational spectra of transition metal carbonyl complexes... 

Synthesis of concave truxene derived of tetrathiafulvalene-type donors as supramolecular partners for convex fullerenes, to be used in the manufacture of fullerene-based self-assembled optoelectronic devices, was described. This synthesis was realized via the Horner-Wittig reaction of truxene and 2-dimethoxyphosphoryl-l,3-dithioles <2007AG(E)1847>. IR and Raman spectral studies of other fullerene-tetrathiafulvalene based systems were performed <2007CPH289>. 

The four fundamental vibrational frequencies and the Si-H bond distance are the result of gas-phase infrared and Raman spectral studies by Kattenberg and Oskam (8). They are in excellent agreement with values selected from earlier work as given in the compilations of Janz and Mikawa (9) and Shiraanouchi (1 ). The heat capacity and entropy calculations are based on a tetrahedral structure. The S°(298.15 K) = 48.89 0.01 cal K mol is in good agreement with another evaluation ( ). 

Ab initio calculations gave vibrational wavenumbers for CH3C(0)0CH2 SiF3.423 Detailed IR and Raman spectral studies, backed up by a range of... 

WAL] Walrafen, G. E., Raman spectral studies of molten selenious acid,... 

Raman spectral studies suggest that liquid Cr02F2 exists primarily as a monomer with C2 symmetry, whereas solid Cr02F2 has a fluorine-bridged polymeric structure retaining terminal Cr—O bonds. 

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