ISSN:
1573-9171
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract γ-Bis(diphenylphosphine)aminopropyltriethoxysilane is synthesized and studied by IR and1H,13C, and31P1H NMR spectroscopies for the first time. Chemical modification of silica with (EtO)3Si(CH2)3N(PPh2)2 gives the support (γ-DPAMPS) containing identical N(PPh2)2 ligands on its surface. Subsequent treatment of the support with (EtO)3Si(CH2)3NH2 and ClPPh2 gives a silica surface containing two types of attached ligands, NH2 and N(PPh2)2, in the ratio ∼1∶1. The heterogenized complexes Ni-HMC, prepared by ligand exchange between Ni(PPh3)n (n=3, 4) and γ-DPAMPS, in combination with Et2AlCl exhibit activity and selectivity for ethylene dimerization.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00962421
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