Cobalt-59 Nuclear Magnetic Resonance Study of Cobalt(III) Complexes. Empirical Rules for the Cobalt-59 Chemical Shifts and Line Widths of [CoIII(en)x(NH3)6−2x−yLy]-type Complexes
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چکیده
منابع مشابه
Density Functional Study of Cobalt-59 Nuclear Magnetic Resonance Chemical Shifts and Shielding Tensor Elements in Co(III) Complexes
A density functional method has been used to successfully predict the isotropic 59Co nuclear magnetic resonance (NMR) chemical shifts of the following anionic, cationic and neutral Co(III) complexes: [Co(CN)6], [Co(NH3)6], [Co(NO2)6], [Co(NH3)4CO3], Co(acac)3, and [Co(en)3]. Isotropic chemical shifts are wellreproduced by using Wachters’ cobalt basis set and uniform 6-31G* basis sets on the lig...
متن کاملCentral Transition Nuclear Magnetic Resonance in the Presence of Large Quadrupole Couplings: Cobalt-59 Nuclear Magnetic Resonance of Cobaltophthalocyanines†
The acquisition of distortion-free solid-state nuclear magnetic resonance (NMR) powder line shapes from half-integer spin systems possessing large quadrupole couplings is exemplified on cobaltophthalocyanine complexes. The acquisition of ideal-like static line shapes even for megahertz-wide central transition patterns is discussed, with the aid of spin-echo sequences incorporating short and ver...
متن کاملElectrogenerated Chemiluminescence. 59. Rhenium Complexes
Re(L)(CO)3Cl complexes (where L is 1,10-phenanthroline, 2,2′-bipyridine, or a phenanthroline or bipyridine derivative containing methyl groups) are photoluminescent in fluid solution at room temperature. In acetonitrile solutions, these complexes display one chemically reversible one-electron reduction process and one chemically irreversible oxidation process. λmax for the luminescence is depen...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
Synthesis and reactivity of cobalt boryl complexes.
The reaction between [Co(PMe3)4] and B2(4-Mecat)2 (4-Mecat = 1,2-O2-4-MeC6H3) or between [Co(PMe2Ph)4] and B2(cat)2 (cat = 1,2-O2C6H4) affords the paramagnetic Co(II) bisboryl complexes [Co(PMe3)3[B(4-Mecat)]2] and [Co(PMe2Ph)3{B(cat)]2] respectively, both of which have been structurally characterised. ESR data and preliminary diboration and boryl transfer reactivity studies are also presented....
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1974
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.47.1442