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Coriolis coupling constants of cis and trans-1,2-dichloroethylene
(1975)
Coriolis coupling constants and the inertia defect for cis- and trans-1,2-dichloroethylene have been calculated, using force constants obtained by the iterative consistency method. The results obtained are compared with ...
Synthesis of polymeric organic-inorganic hybrid materials. Partially deacetylated chitin-silica hybrid
(Wiley-VCH Verlag, 1997)
This work reports the synthesis of a novel polymeric organic-inorganic hybrid. The inorganic component is a silica network obtained by controlled hydrolysis of tetraethyl orthosilicate via sol-gel process and the organic ...
Internal rotational barriers by quantum chemical methods. Aromatic carbonyl compounds
(John Wiley and Sons Ltd, 1996)
Internal rotational barriers of aromatic carbonl compounds were calculated by means of semi-empirical quantum chemical methods such as AM1 and PM3. Rotational potential barriers in the AM1 approach (VAM1) follow the ...
Effect of stirring on photoinitiated polymerization
(1988)
The polymerization of methyl methacrylate photosensitized by benzion methyl ether over a wide range of initiator absorbances was investigated. Both the polymerization rate and the polymer molecular weight distribution are ...
Costunolide and Flavonols from Gochnatia Foliosa Var. Fascicularis
(1984)
As part of a systematic chemical investigation of Chilean Compositae (1-3), we examined the secondar chemistry of a member of the genus Gochnatia (tribe Mutisieae, subtribe Gochnatiinae): Gochnatia foliosa var. fscicularia ...
Synthesis of branched polyethylene from ethylene by tandem action of iron and zirconium single site catalysts
(2001)
The synthesis of low-density polyethylene from ethylene as the only monomer feed has been investigated as an alternative route to branched polyethylene and to obtain new materials with different properties, avoiding the ...
The Terpenoids of Maytenus boaria MOL. (Celastraceae)
(1993)
The known triterpenoids β‐amyrin (= olean‐12‐en‐3β‐ol; 22), lupeol (= lup‐20(29)‐en‐3β‐ol; 17), betulin (= lup‐20(29)‐ene‐3β,28‐diol; 18), lup‐20(29)‐ene‐3β,30‐diol (20), oleanolic acid (= 3β‐hydroxyolean‐12‐en‐28‐oic acid; ...
Syntheses of p-Phenylene-and p-Biphenylene-Bridged Methylated Binuclear Ferrocenes
(1988)
p-Phenylene and p-biphenylene-bridged methylated cyclopentadienyl rings were prepared. Reaction of the dilithio salts of the ligands with (η5-C5Me5)Fe(acac) provides cleanly ferrocenes bridged by p-phenylene and p-biphenylene ...
Isocedrene and guaiane derivatives from pleocarphus revolutus
(1988)
A reinvestigation of the aerial parts of Pleocarphus revolutus afforded, in addi tion to sesquiterpenes isolated previously, four new guaiane derivatives and four isocedrene derivatives, one of which is new. Furthermore, ...