摘要:

AbstractThe Mössbauer absorption and emission spectra of FeL2PY2Fe‐doped (57Fe2M) (L)2Py2and57CoL2Py2(where, L=acac, dbm and hfa, M=Co or Ni) are reported. It was found that the Mössbauer parameters, especially, quadrupole splittings of57Fe in57CoL2Py2exception of57Co(dbm)2Py2are quite similar to those of the corresponding (57Fe, Co)L2Py2. In addition, the Mössbauer spectra shown that the chemical states of57Fe in the hosts of Fe(acac)2PY2, Co(acac)2Py2and Ni(acac)2Py2were not ident

ISSN:0009-4536    

DOI:10.1002/jccs.198000001

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractThe mixture ofdl‐menthyl chloroacetaee isomers and the mixture ofdl‐menthyl cyanoacetate isomers were prepared by the esterification of the mixture ofdl‐menthol with chloroacetic acid and cyanoacetic acid, respectively. In these mixtures thedl‐menthyl chloroacetate m. p. 23–24° and thedl‐menthyl cyanoacetate m. p. 63–63.5° are crystal form, the other isomers, such asdl‐isomenthyl cyanoacetate b.p. 136–138°/3mmHgare liquid form. The crystal form ester waa isolatded from liquid form ester by cooling crystallization, and thendl‐menthol m. p. 32–33° was obtained by hydrolysis. The isolation effect has intimately relation to thedl‐menthol content in raw material, the moredl‐menthol content, the more yield and purity of crystal form ester, therefore, after hydrolysis, the obtaineddl‐

ISSN:0009-4536    

DOI:10.1002/jccs.198000002

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractWiddringtonia acid II, a common acidic constituent in Juniperus and Widdringtonia species, and 3β‐hydroxcedrol were isolated frontJuniperus squamataLamb. Widdringtonia acid II was proved to be crystals derived from the 1:1 mixture of β‐chamigrenic acid and hinokiic acid. The structures of β‐chamigrenic acid and 3β‐hydroxycedrol were established by chemical and physical evidence. In addition three other crystalline compounds, 7‐oxototarol, hinokiol, and widdrol, were al

ISSN:0009-4536    

DOI:10.1002/jccs.198000003

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractSix crystalline compounds, α‐cedrol, β‐sitosterol, cryptojaponol sugiol and two new diterpene phenols were isolated from the hexane extractive of wood ofJuniperus formosanaHayata. Two new phenolic derivatives of deoxocryptojaponoi were established as 7α‐methoxydeoxocryptojaponol and 7β‐hydroxydeoxocryptojaponol, respectively, by chemical and physic

ISSN:0009-4536    

DOI:10.1002/jccs.198000004

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

ISSN:0009-4536    

DOI:10.1002/jccs.198000005

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractSome 1:1 and 1:2 adducts of cobalt(II), nickel(II) and copper(II) chloroacetates with quinolineN‐oxide have been isolated by the interaction of the appropriate metal chloroacetate with quinolineN‐oxide (QuinNo). The complexes isolated are of 1:1 stoichiometry of formula [M(CH3_xClxCOO)2QuinNO] (when M=Co(II), Ni(II); X=1,2 and 3 and when M=Cu(II), X=l and 2) except copper(II) trichloroacetate which yields an adduct of 1:2 stoichiometry of formula[Cu(CCI3COO)2(QuinNO)2]. The adducts isolated are soluble in common organic solve

ISSN:0009-4536    

DOI:10.1002/jccs.198000006

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractDibasic tridentate Schiff bases obtained by the condensation ofO‐aminobenzoic acid with salicyldehyde and its 5‐chloro and 5‐bromo derivatives were synthesised and used to pracipitate Zr(IV), Th(IV) and UO2(VI) metals as complexes. The 1:1 (metal‐ligand) stoichiometry of these complexes is shown by elemental analysis, gravimetric estimations and conductometric titrations while the structures of the complexes are proved by i.r. spectra and thermogravimetric analysis. The magnetic susceptibility measurements by Gouy method show, these complexes to be monormeic and diamagnetic. The molar conductance values in nitrobenzene indicate the nonelectrolytic behaviour of the complexes. The results show that the complexes of the type Zr(OH)2L.H2O, Th(OH)2L.H2O and UO2L.H2O are formed having solvent molecule in co‐ordination with

ISSN:0009-4536    

DOI:10.1002/jccs.198000007

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY