scholarly journals SUR LES SPECTRES INFRAROUGES DES PHTALOCYANINES

1966 ◽  
Vol 44 (2) ◽  
pp. 125-136 ◽  
Author(s):  
H. F. Shurvell ◽  
L. Pinzuti
Keyword(s):  
Infrared Spectra ◽  
Metal Free ◽  
Metal Derivatives ◽  
Copper Phthalocyanines ◽  
Derivatives Of

Infrared spectra of metal-free phthalocyanine, chlorinated and unchlorinated copper phthalocyanines, and three new metal derivatives of phthalocyanine: MoPc, Na2Pc, and AlOH—Pc (Pc = C32H16N8), have been recorded. Assignments have been suggested for many of the peaks in the infrared spectra of the phthalocyanines.

scholarly journals Nucleofugal behavior of a β-shielded α-cyanovinyl carbanion

2018 ◽  
Vol 14 ◽  
pp. 3018-3024
Author(s):  
Rudolf Knorr ◽  
Barbara Schmidt
Keyword(s):  
Michael Addition ◽  
Carbonyl Compounds ◽  
Room Temperature ◽  
Experimental Conditions ◽  
Metal Free ◽  
Metal Derivatives ◽  
Carbonyl Addition ◽  
Derivatives Of

Sterically well-shielded against unsolicited Michael addition and polymerization reactions, α-metalated α-(1,1,3,3-tetramethylindan-2-ylidene)acetonitriles added reversibly to three small aldehydes and two bulky ketones at room temperature. Experimental conditions were determined for transfer of the nucleofugal title carbanion unit between different carbonyl compounds. These readily occurring retro-additions via C–C(O) bond fission may also be used to generate different metal derivatives of the nucleofugal anions as equilibrium components. Fluoride-catalyzed, metal-free desilylation admitted carbonyl addition but blocked the retro-addition.

Metal derivatives of amide oximes. III. Products of the reaction between dialkyldichlorosilanes and amide oximes

1974 ◽  
Vol 27 (11) ◽  
pp. 2319 ◽  
Author(s):  
AB Goel ◽  
VD Gupta
Keyword(s):  
Infrared Spectra ◽  
Amino Group ◽  
Monomeric Form ◽  
Metal Derivatives ◽  
Secondary Amino ◽  
Derivatives Of

The reaction of dialkyldichlorosilanes with amide oximes leads to cyclic products whose monomeric form has an l-oxa-3,5-diaza-2-silacyclopent-4-ene structure. These compounds exist mostly in adimeric form, occasionally monomeric or trimeric. Their infrared spectra have been interpreted. The secondary amino group of the compounds has been trisilylated.

Reactions of pentachlorothiophenol. I. Preparation of some simple metallic and non-metallic derivatives

1970 ◽  
Vol 48 (12) ◽  
pp. 1869-1875 ◽  
Author(s):  
C. R. Lucas ◽  
M. E. Peach
Keyword(s):  
Infrared Spectra ◽  
Mass Spectra ◽  
Simple Metal ◽  
Group V ◽  
Metal Derivatives ◽  
Derivatives Of

The preparation and properties of simple metal derivatives of pentachlorothiophenol are described: MSC6Cl5 (M = Na, K, Rb, Cs, TI, Cu, Ag, Au, Ph3Sn, n-Bu3Sn, Ph3Pb, Ph4As), M(SC6Cl5)2 (M = Zn, Cd, Hg, Ni, Pd, Pb, n-Bu2Sn, Sn), Ge(SC6Cl5)4, and Pt(SC6Cl5)3Cl. Non-metallic derivatives of group V, M(SC6Cl5)3 (M = P, As, Sb) and PhP(SC6Cl5)2 have also been prepared from Pb(SC6Cl5)2 and the corresponding non-metallic chloride. The infrared spectra of these compounds and the mass spectra of C6Cl5SH and (C6Cl5S)2 have been examined.

Infrared Spectra of Some Chloro Derivatives of s-Triazine

1966 ◽  
Vol 20 (3) ◽  
pp. 159-160 ◽  
Author(s):  
T. S. Herman
Keyword(s):  
Infrared Spectra ◽  
Triazine Ring ◽  
Chlorine Atoms ◽  
Vibrational Assignments ◽  
Fundamental Frequencies ◽  
Bending Mode ◽  
Chloro Derivatives ◽  
Derivatives Of

The effects of chlorine atoms on the fundamental frequencies of the s-triazine ring are discussed and the vibrational assignments in the region 1600–700 cm−1 are extended. The variation in the position of the C3N3-ring bending mode in the region near 810 cm−1 is discussed.

1,3-dipolar cycloaddition in the synthesis of glycoconjugates of natural chlorins and bacteriochlorins

2009 ◽  
Vol 13 (03) ◽  
pp. 336-345 ◽  
Author(s):  
Mikhail A. Grin ◽  
Ivan S. Lonin ◽  
Anna A. Lakhina ◽  
Elena S. Ol'shanskaya ◽  
Alexey I. Makarov ◽  
...  
Keyword(s):  
Triple Bond ◽  
Tautomeric Form ◽  
Click Reaction ◽  
Copper Cation ◽  
Water Soluble ◽  
Dipolar Cycloaddition ◽  
Nmr Studies ◽  
Metal Free ◽  
Cu Complex ◽  
Derivatives Of

Glucose-, galactose- and lactose-containing photosensitizers based on derivatives of chlorophyll a and bacteriochlorophyll a were synthesized with the use of [3+2] cycloaddition between sugar azides and triple bond derivatives of chlorins and bacteriochlorins. Unlike bacteriochlorin cycloimide, chlorin was detected to form a Cu -complex during the click reaction. An approach to the synthesis of metal-free glycosylated chlorins was developed with the use of "protection" by Zn 2+ cation and subsequent demetalation. It is based on the action of alkynyl chlorin e6 derivative Zn -complex, which is resistant to the substitution by copper cation. Bacteriochlorin p cycloimide conjugate with per-acetylated β-D-lactose was obtained and shown to become water-soluble after unblocking of the lactose hydroxy functions. NMR studies allowed for the elucidation of structure, tautomeric form and conformation of the obtained compounds.

Coinage (Cu, Ag) metal derivatives of salicylaldehyde N-ethylthiosemicarbazone: synthesis, spectroscopy, and structures

2012 ◽  
Vol 65 (10) ◽  
pp. 1750-1764 ◽  
Author(s):  
Tarlok S. Lobana ◽  
Poonam Kumari ◽  
Ishveen Kaur ◽  
Nirandeep Kaur ◽  
Ginni Garg ◽  
...  
Keyword(s):  
Metal Derivatives ◽  
Derivatives Of
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