17440-81-2Relevant articles and documents
Charged states of proteins. Reactions of doubly protonated alkyldiamines with NH3: Solvation or deprotonation. Extension of two proton cases to multiply protonated globular proteins observed in the gas phase
Peschke, Michael,Blades, Arthur,Kebarle, Paul
, p. 11519 - 11530 (2007/10/03)
The apparent gas-phase basicities (GBapp'S) of basic sites in multiply protonated molecules, such as proteins, can be approximately predicted. An approach used by Williams and co-workers was to develop an equation for a diprotonated system, NH
Structure and properties of the hydride-containing cluster ion Pt(H)(PPh3)(AuPPh3)72+
Kanters,Bour,Schlebos,Bosman,Behm,Steggerda,Ito,Pignolet
, p. 2591 - 2594 (2008/10/08)
The title cluster ion can be prepared by the reaction of H2 with Au(PPh3)+ and Pt(PPh3)3 as well as by the reaction of Pt(AuPPh3)82+ with PPh3 and an acid. M?ssbauer spectra show that the central atom is Pt. The structure was determined by X-ray diffraction of Pt(H)(PPh3)(AuPPh3)7(PF6) 2·1/2CH2Cl2 (triclinic, P1, a = 17.085 (6) ?, b = 17.301 (8) ?, c = 29.401 (12) ?, α = 94.62 (10)°, β = 96.26 (5)°, γ = 118.24 (5)°, V = 7523.2 ?3, Z = 2, R = 0.085 and Rw = 0.115 for 15921 unique reflections and 596 variables, Cu Kα radiation). In the metal cluster the central Pt is surrounded by seven Au atoms and one PPh3 in a distorted cubic geometry, each Au being attached to a PPh3. The H is close to Pt and at least two Au atoms, as can be concluded from deformations in the metal frame and from Orpen calculations. Detailed 31P, 195Pt, and 1H NMR spectra are presented. The different Au-PPh3 sites, present in the crystal, are equilibrated in solution at room temperature.
ACIDIC PROPERTIES OF 4-ARYLAZO-PHENOLS
Korewa, Ryszard,Nesterowicz, Marianna
, p. 577 - 582 (2007/10/02)
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