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Bis(triphenylphosphine)iminium chloride is the chemical compound with the formula [((C 6 H 5) 3 P) 2 N]Cl, often abbreviated [(Ph 3 P) 2 N]Cl, where Ph is phenyl C 6 H 5, or even abbreviated [PPN]Cl or [PNP]Cl or PPNCl or PNPCl, where PPN or PNP stands for (Ph 3 P) 2 N.
A Principal protected note (PPN) is an investment contract with a guaranteed rate of return of at least the amount invested, and a possible gain.. Although traditional fixed income investments such as guaranteed investment certificates (GICs) and bonds provide investment security with little or no risk of capital loss, they provide modest returns.
PPN may refer to: Guillermo León Valencia Airport; Pre-Pottery Neolithic; Nigerien Progressive Party-African Democratic Rally (Parti Progressiste Nigérien) Pingat Pangkuan Negara, a Malaysian honour; Pedunculopontine nucleus; Principal protected note, an investment contract; Protoplanetary nebula