51
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Papayannis DK, Melissas VS, Kosmas AM. A quantum mechanical study of IOX (X=Cl, Br, I) isomers. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)01057-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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52
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Stoll H, Metz B, Dolg M. Relativistic energy-consistent pseudopotentials--recent developments. J Comput Chem 2002; 23:767-78. [PMID: 12012353 DOI: 10.1002/jcc.10037] [Citation(s) in RCA: 166] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The direct adjustment of two-component pseudopotentials (scalar-relativistic + spin-orbit potentials), to atomic total energy valence spectra derived from four-component multiconfiguration Dirac-Hartree-Fock all-electron calculations based on the Dirac-Coulomb-Breit Hamiltonian, has been made a routine tool for an efficient treatment of heavy main-group elements. Both large-core (nsp valence shell) and small-core ((n - 1)spd nsp valence shell) potentials have been generated for all the post-d elements of groups 13-17. At the example of lead and bismuth compounds (PbHal, BiH, BiO, BiHal (Hal = F, Cl, Br, I)), we show how small-core and large-core potentials can be combined in accurate, yet computationally economic, spin-free-state-shifted relativistic electronic structure calculations of molecular ground and excited states.
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Affiliation(s)
- Hermann Stoll
- Institut für Theoretische Chemie, Universität Stuttgart, D-70550 Stuttgart, Germany.
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53
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Santos JC, Contreras R, Chamorro E, Fuentealba P. Local reactivity index defined through the density of states describes the basicity of alkaline-exchanged zeolites. J Chem Phys 2002. [DOI: 10.1063/1.1449944] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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54
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Faglioni F, Lazzeretti P. Understanding parity violation in molecular systems. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 65:011904. [PMID: 11800715 DOI: 10.1103/physreve.65.011904] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2001] [Indexed: 05/23/2023]
Abstract
Parity-violation energy (E(PV)) due to weak nuclear interactions between nucleons and electrons in chiral molecular systems provides a fundamental tool to verify our understanding of electronic behavior in complex systems. We used both a relativistic and a nonrelativistic approach to study a number of simple molecules and analyze the corresponding E(PV) in terms of intuitive electrodynamic concepts. We developed a qualitative model to predict the sign of E(PV) and its behavior against selected geometric distortions. Our model provides a valuable tool to screen large sets of molecules and select interesting candidates for more expensive investigations.
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Affiliation(s)
- Francesco Faglioni
- Dipartimento di Chimica, Università degli Studi, Via G. Campi 183, 41100 Modena, Italy
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55
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Dolg M. Chapter 14 Relativistic effective core potentials. THEORETICAL AND COMPUTATIONAL CHEMISTRY 2002. [DOI: 10.1016/s1380-7323(02)80040-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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56
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A quantum mechanical study of the structure, vibrational spectra and relative energetics of XOOI, XIO2 and XOIO (X=Cl, Br, I) isomers. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)01160-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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57
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Marino MM. Relativistic pseudopotentional incorporating core/valence polarization and nonlocal effects. JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES 2001; 41:64-76. [PMID: 11206387 DOI: 10.1021/ci0000676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A relativistic pseudopotentional (RPP) for use in ab initio molecular electronic structure calculations is derived in the context of the relativistic effective core potential (REP) method of Lee et al. The resulting atom-specific RPP has salient features of the REP imbedded within it while retaining the form of a functional that is dynamically defined at runtime when used in calculations on molecules. The RPP is determined from Dirac-Fock wave functions for the isolated atom. Outer core two-electron interactions are incorporated into the RPP by means of variable coefficients that are defined in the context of the final molecular wave function. This form permits polarization of the outer core shells analogous to that occurring in all-electron molecular Hartree-Fock calculations while retaining these shells as part of the atomic pseudopotentional. Use of the RPP in post-Hartree-Fock molecular calculations permits the incorporation of core/valence correlation effects.
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Affiliation(s)
- M M Marino
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA.
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58
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Ermler WC, Marino MM. Nodeless valence (pseudo)spinors. JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES 2001; 41:77-82. [PMID: 11206384 DOI: 10.1021/ci0000629] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Atomic calculations using small-core relativistic effective core potentials (RECPs) explicitly treating outer core electrons are used to define two-component nodeless valence spinors (NVSs) and nodeless valence pseudospinors (NVPSs). Errors attributable to nonlocal electron repulsion interactions that arise from large-core RECPs are shown to result from the inherent arbitrariness in the choice of match points and number of derivatives that define shape-consistent pseudospinors, as well as the positions of radial nodes that reside in the outer core regions of atoms. Self-consistent field calculations in omegaomega-coupling for InH and InCl using RECPs derived from NVSs and NVPSs are reported. Increased bond distances relative to those calculated using very-large-core RECPs for In agree with those due to frozen 4d(3/2) and 4d(5/2) spinors and a small-core RECP. Results for AmCl+2 also reveal that the shortening in the bond length is recovered when the very-large-core RECP is derived using nodeless valence (pseudo)spinors.
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Affiliation(s)
- W C Ermler
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA.
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59
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Schwerdtfeger P, Brown JR, Laerdahl JK, Stoll H. The accuracy of the pseudopotential approximation. III. A comparison between pseudopotential and all-electron methods for Au and AuH. J Chem Phys 2000. [DOI: 10.1063/1.1313556] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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60
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Gorelsky SI, da Silva SC, Lever A, Franco DW. Electronic spectra of trans-[Ru(NH3)4(L)NO]3+/2+ complexes. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(99)00611-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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61
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Fuentealba P, Szentpaly LV, Preuss H, Stoll H. Pseudopotential calculations for alkaline-earth atoms. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/18/7/010] [Citation(s) in RCA: 208] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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62
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Vyboishchikov SF, Sierraalta A, Frenking G. Topological analysis of electron density distribution taken from a pseudopotential calculation. J Comput Chem 1997. [DOI: 10.1002/(sici)1096-987x(199702)18:3<416::aid-jcc11>3.0.co;2-g] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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63
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Schwerdtfeger P, Ischtwan J. The convergence of the Møller-Plesset series in molecular properties of diatomic group 13 compounds. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0166-1280(94)80199-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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64
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Schwerdtfeger P, Boyd PD, Brienne S, McFeaters JS, Dolg M, Liao MS, Eugen Schwarz W. The mercury-mercury bond in inorganic and organometallic compounds. A theoretical study. Inorganica Chim Acta 1993. [DOI: 10.1016/s0020-1693(00)83833-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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65
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Bonačić‐Koutecký V, Češpiva L, Fantucci P, Koutecký J. Effective core potential‐configuration interaction study of electronic structure and geometry of small neutral and cationic Agnclusters: Predictions and interpretation of measured properties. J Chem Phys 1993. [DOI: 10.1063/1.464552] [Citation(s) in RCA: 241] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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66
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68
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Åkeby H, Pettersson LGM, Siegbahn PEM. Core correlation and the binding energy of Sc2. J Chem Phys 1992. [DOI: 10.1063/1.463173] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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69
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71
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Pettersson LGM, Åkeby H. Core–valence correlation effects using approximate operators. J Chem Phys 1991. [DOI: 10.1063/1.459820] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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72
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Merchan M, Daudey JP, Gonzalez-Luque R, Nebot-Gil I. On the dissociation energy of Cu2 and CuH using a differential correlation approach. Chem Phys 1990. [DOI: 10.1016/0301-0104(90)89007-d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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73
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Pettersson LGM, Åkeby H, Siegbahn P, Wahlgren U. The effects of core (3d) correlation on chemisorption. J Chem Phys 1990. [DOI: 10.1063/1.458632] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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75
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Ermler WC, Ross RB, Christiansen PA. Spin-Orbit Coupling and Other Relativistic Effects in Atoms and Molecules. ADVANCES IN QUANTUM CHEMISTRY 1988. [DOI: 10.1016/s0065-3276(08)60615-2] [Citation(s) in RCA: 181] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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76
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Mixed pseudo-potential approach to the on-top chemisorption of atomic hydrogen on the (100) silver surface. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0022-0728(87)80195-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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77
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79
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Lombardi E, Jansen L. Model analysis of ground-state dissociation energies and equilibrium separations in alkali-metal diatomic compounds. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 33:2907-2912. [PMID: 9896997 DOI: 10.1103/physreva.33.2907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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80
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Schwerdtfeger P, Szentpály LV, Vogel K, Silberbach H, Stoll H, Preuss H. Relativistic and correlation effects in pseudopotential calculations for Br, I, HBr, HI, Br2, and I2. J Chem Phys 1986. [DOI: 10.1063/1.450454] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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81
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Hay PJ, Martin RL. All‐electron and valence‐electron calculations on AgH, Ag2, and AgO. J Chem Phys 1985. [DOI: 10.1063/1.449729] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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82
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Raghavachari K, Sunil KK, Jordan KD. Theoretical study of the bonding in CuH and Cu2. J Chem Phys 1985. [DOI: 10.1063/1.449034] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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83
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Illas F, Rubio J, Barthelat J. Cu as a one-electron atom: Molecular structure and dissociation energy of CuOH. Chem Phys Lett 1985. [DOI: 10.1016/0009-2614(85)80442-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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84
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Igel‐Mann G, Stoll H. Comment on ‘‘A proposal for the proper use of pseudopotentials in molecular orbital cluster model studies of chemisorption’’. J Chem Phys 1985. [DOI: 10.1063/1.449460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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85
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Igel G, Wedig U, Dolg M, Fuentealba P, Preuss H, Stoll H, Frey R. Cu and Ag as one‐valence‐electron atoms: Pseudopotential CI results for CuO and AgO. J Chem Phys 1984. [DOI: 10.1063/1.447945] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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