Koopmans' theorem ionization potentials have been calculated for a series of hydrides, methyls, and silyls H,X, (CH&X, and (SiHS),X (X = F, C1, n = 1; X = 0, S, n = 2; X = N, P, n = 3), together with some mixed species (MH3),XH3., (X = N, P; M = C, Si) using ab initio SCF methods. The calculated val
The structure and acid–base properties of methyl and silyl amines and phosphines: An ab-initio SCF study
✍ Scribed by Chistopher Glidewell; Colin Thomson
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 784 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0192-8651
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✦ Synopsis
The structures of the methyl and silyl amines and phosphines and their ions have been calculated using ab-initio SCF theory and the 3-216: basis set. The computed structures give excellent agreement with the available experiment data without the inclusion of d functions, with the exception of (SiH3)2Nand the isoelectronic molecules (SiH&O and (SiH3)2C2-where d functions are essential. The observed trends in computed basicities and acidities are reproduced by the calculations.
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Ab-initio calculations using three large gaussian basis sets arc reported for the unstable molecule SF2. The cffcct on tbc energy and computed geometry of polarhation functions and their expcrnents is examined, and a variety of one4cciron propertics computed.
An ab initio LCAO MO XT: calculation h;ls been cxricd out on hypofluorous acid (fiOFt in order ta sttidy the electronic structure. geometry 2nd other one-electron properties of this mofecuic. The minimum energy geometry vas found t0 be ROF = i.450 A, ROH = 1.080 P\, and 8 = 100.8", which is in food