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ZINC CARBAMATE

H NMR data has been reported for the ethylzinc complex, Zn(TPP—NMe)Et, formed from the reaction of free-base N-methyl porphyrin H(TPP—NMe) with ZnEti. The ethyl proton chemical shifts are observed upheld, evidence that the ethyl group is coordinated to zinc near the center of the porphyrin. The complex is stable under N2 in the dark, but decomposed by a radical mechanism in visible light.The complex reacted with hindered phenols (HOAr) when irradiated with visible light to give ethane and the aryloxo complexes Zn(TPP—NMe)OAr. The reaction of Zn(TPP—NMe)Et, a secondary amine (HNEt2) and CO2 gave zinc carbamate complexes, for example Zn(TPP—NMclOiCNEti."" ... [Pg.312]

Zinc carbamate complexes are well known, and the structural types and stabilities can be compared with thiocarbamates and dithiocarbamates which are discussed in Sections 6.8.11.1.3 and 6.8.7.1.4482 Carbamates of zinc can be formed from the reaction of carbon dioxide with alkylzinc alkyl amides and further reaction with alkylzinc can give a distorted cubane structure.483 The tetrameric diethylcarbamate species initially formed can also be used to produce monomeric or dimeric carbamate structures in reaction with amines tetramethylethylenediamine forms a monomer [(Me2NCH2)2Zn(02CN(C2H5)2)2] with an octahedral zinc center and pyridine forms a dimer[CsH5NZn2Me(02CN(C2H5)2)3] with tetrahedral zinc centers.484... [Pg.1187]

The structure of the associated zinc carbamate species has been elucidated in ome simple systems [176,177] and may be presented schematically as follows ... [Pg.463]

Synonyms Bis (dibutyidithiocarbamato) zinc Carbamic acid, dibutyldithio-, zinc complex Dibutyidithiocarbamic acid zinc salt ZDBC Zinc bibutyidithiocarbamate Zinc bis (dibutylcarbamodithiato-S-S ) Zinc di-n-butyldithiocarbamate Zinc-N,N-dibutyldithiocarbamate Empirical C, Flj6N2S4Zn Formula Zn[SC(S)N(C4H<,)2 2... [Pg.1423]

CAS 137-30-4 EINECS/ELINCS 205-288-3 Synonyms Bis (dimethylcarbamodithioato,S,S ) zinc Carbamic acid, dimethyidithio-, zinc salt (2 1) Dimethylcarbamodithioic acid, zinc salt Dimethyidithiocarbamate zinc salt ZDMC Zinc bis (dimethyidithiocarbamate) Zinc bis (dimethylthiocarbamoyl) disulfide Ziram Classification Metal dithiocarbamate Empirical QiH,2N2S4Zn Formula Zn(SCSNCH3CH3)2... [Pg.1423]

Dialkylzinc initiated polymerizations apparently take place by a different mechanism. The first step is pictured by Makino, Inoue, and Tsuruta as a hydrogen abstraction by dialkylzinc from This is similar to the reaction with a base shown earlier. The second stage of initiation, however, is a reaction between two molecules of the activated caiboxyanhydrides, and formation of zinc carbamate ... [Pg.202]

The propagation is a caibonyl addition of the zinc carbamate to the activated -carboxyanhydride to form a mixed anhydride. The mixed anhydride then changes into an amide group with elimination of caibon dioxide. ... [Pg.202]

Scheme 4.22 C02-independent (a) and C02-deptaidtait (b) exchange processes in tetranuclear zinc carbamates (adapted from [135])... Scheme 4.22 C02-independent (a) and C02-deptaidtait (b) exchange processes in tetranuclear zinc carbamates (adapted from [135])...
Domide D, Kaifer E, Mautz J, Walter O, Behrens S, Himmel H-J (2008) Synthesis and characterisation of some new zinc carbamate complexes formed by CO2 fixation and their use as precursors for ZnO particles under mild conditions. Eur J Inorg Chem 3177-3185... [Pg.138]

See other pages where ZINC CARBAMATE is mentioned: [Pg.57]    [Pg.465]    [Pg.608]    [Pg.4749]    [Pg.666]    [Pg.1241]    [Pg.110]    [Pg.112]    [Pg.91]    [Pg.99]    [Pg.1115]    [Pg.59]    [Pg.59]   
See also in sourсe #XX -- [ Pg.136 ]

See also in sourсe #XX -- [ Pg.463 , Pg.465 ]



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