WebCrown ether ammonium ion binding occurs by hydrogen bonding between oxygen atoms (or nitrogen, sulfur or other free electron pair in hetero crown ethers) and N + –H bonds . The cyclic arrangement leads to a pre-organization of the host [102] , whereby selectivity is determined by the ring size. WebCrown Intern Transport produceert materieel voor intern transport zoals elektrische en LPG heftrucks en biedt daarnaast vlootbeheer, klantendiensten en logistieke oplossingen. …
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