Novel resorcinarene cavitand-based CMP(O) cation ligands: Synthesis and extraction properties
Creators
- 1. Netherlands Energy Research Foundation (ECN), Petten (Netherlands)
- 2. Twente Univ., Enschede (Netherlands). Lab. for Supramolecular Chemistry and Technology (SMCT)
Description
Tetrafunctionalized resorcinarene cavitands (4, 5, and 6) have been synthesized starting from tetrakis(bromomethyl)cavitand 3. New cavitand-based cation ligands with carbomoylmethylphoshinate (CMP) and -phosphine oxide (CMPO) moieties (8a,b and 9a,b) were prepared via two different routes in good (45-86%) overall yields. The ligands (8a,b and 9b) are very effective europium extractants. Ph2CMPO-N(Pr)-cavitand 8b has the highest extraction constant determined with radio tracer experiments, for 1:1 complexation with Eu(picrate)3 (Kex1=2.7x1012 M-4). The steric pre-organization of the four CMP(O) moieties on the resorcinarene cavitand improves the efficiency and selectivity [of Eu(III) over UO2(II) and Fe(III)[ of the metal extraction processes, compared to simple CMP(O) extractants. (orig.)
Availability note (English)
Available from the authors at the Netherlands Energy Research Foundation (ECN), Petten (NL).Additional details
Publishing Information
- Imprint Pagination
- 28 p.
- Report number
- ECN-RX--97-005
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 28053896
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CMPO; EUROPIUM; LIGANDS; RADIOACTIVE WASTE PROCESSING; TRUEX PROCESS
- Descriptors DEC
- ELEMENTS; MANAGEMENT; METALS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PHOSPHINE OXIDES; RARE EARTHS; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING