The molecular structure of H3O+ by the ab initio SCF method and with inclusion of correlation energy
β Scribed by H. Lischka; V. Dyczmons
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 574 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
Ab initio SW and IEPA PNO correlation energy calculations with hrge gaussian basis sets are reported for Mao+. The equilibrium geometry is pynmidal both from SCF and LEPA PNO calculations.
The inversion barrier is increased considerably by the inclusion of electron correlation.
π SIMILAR VOLUMES
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 MP4 full,SDTQ r6-311qqG d,p rrMP2 full r6-311qq Ε½ . G d,p ab initio study was performed of the reactions of formyl and isoformyl cations with H O and NH , which play an important role in flame and 2 3 interstellar chemistries. Two different confluent channels were located leading to CO q H O q r
Ab initio moIecular orbital cakulations ha\e been carried out on various structures of the LiAlF4 complex using minimal and extended basis sets. A C2v structure u ith two fluorines in the bridge was found to be more stable than structures with one and three fluorines in the bridge\_ Migration of the
Large-scale f-lussn~ orbxd SCT MO calculations xe prc.cntcd for rhc t11lc molcculc> C&xd.ncd rqudlbrmm bcomc-LIICS, hydrogen-bond dlssoclarron encrg~cs. and on~vlccrron propcrncs are gwcn LO supplement c\pcnmcnml dam ior C2H: HCI Chanbcs oi clecrron dlsrnburlon on cornpIe\ torm~non arc dlscusscd rn
The reaction energy profile for H q OH Β¬ H q H O was computed 2 2 using HF, MP2, MP4, QCISD, G1, G2, and G2MP2 ab initio methods. In addition, the Ε½ . B3LYP, B3P86, B3PW91, BLYP, BP291, and SVWN density functional theory DFT methods were also used. All the ab initio methods, with the exception of th