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07132 10.1351/goldbook.ZT07132 ZT07132 current zero differential overlap approximation ZDO 2.3.3 2014-02-24 1 An approach to the systematic neglect of the small-in-value electron repulsion integrals which is used in a number of approximate self-consistent field molecular orbital schemes. It means that all the products of atomic orbitals χ μ χ ν are set to zero and the overlap integralS μ ​ ν = δ μ ​ ν (where δ μ ​ ν is the Kronecker delta). The ZDO approximation greatly simplifies the computation of wavefunctions by eliminating many of two-electron integrals. At the ZDO approximation all three- and four-centered integrals vanish. An approach to the systematic neglect of the small-in-value electron repulsion integrals which is used in a number of approximate self-consistent field molecular orbital schemes. It means that all the products of atomic orbitals [math: χ µ χ ν] are set to zero and the overlap integral[math: S µ ​ ν = δ µ ​ ν] (where [math: δ µ ​ ν] is the Kronecker delta). The ZDO approximation greatly simplifies the computation of wavefunctions by eliminating many of two-electron integrals. At the ZDO approximation all three- and four-centered integrals vanish. goldify http://dev.goldbook.iupac.org/terms/view/M03996 goldify http://dev.goldbook.iupac.org/terms/view/O04357 \unicode[Times]{x3C7} _{\unicode[Times]{x3BC} }\ \unicode[Times]{x3C7} _{\unicode[Times]{x3BD} } \text{S}_{\unicode[Times]{x3BC} \unicode[Times]{x3BD} } = \unicode[Times]{x3B4} _{\unicode[Times]{x3BC} \unicode[Times]{x3BD} } \unicode[Times]{x3B4}_{\unicode[Times]{x3BC}\unicode[Times]{x3BD} } PAC, 1999, 71, 1919. (Glossary of terms used in theoretical organic chemistry) on page 1970 [Terms] [Paper] http://dev.goldbook.iupac.org/terms/view/ZT07132/html http://dev.goldbook.iupac.org/terms/view/ZT07132/json http://dev.goldbook.iupac.org/terms/view/ZT07132/xml http://dev.goldbook.iupac.org/terms/view/ZT07132/plain http://dev.goldbook.iupac.org/terms/view/ZT07132/pdf 2018-09-20T17:20:22-05:00