Alejandro R. Engelmann

Transmission mechanisms of spin–spin coupling constants within the <scp>CHF</scp> approximation: Their study using inner projections of the polarization propagator

Alejandro R. Engelmann, Rubén H. Contreras · International Journal of Quantum Chemistry · 1983 · 84 citations

Natural Sciences, Chemistry, Physics +17

The use of partially restricted molecular orbitals to investigate transmission mechanisms of spin-spin coupling constants. I. The? and? contributions within the FPT INDO method

Alejandro R. Engelmann, Rub�n H. Contreras, Julio C. Facelli · Theoretical Chemistry Accounts · 1981 · 43 citations

Natural Sciences, Chemistry, Computational Chemistry +14

Unrestricted Hartree-Fock instabilities in nuclear spin-spin coupling calculations. The MNDO method

Gustavo E. Scuseria, Alejandro R. Engelmann, Rub�n H. Contreras · Theoretical Chemistry Accounts · 1982 · 32 citations

Natural Sciences, Chemistry, Physics +13

Transmission mechanisms of inter‐proton long‐range couplings in substituted anisoles

Dora G. de Kowalewski, Rubén H. Contreras, Alejandro R. Engelmann et al. · Organic Magnetic Resonance · 1981 · 32 citations

Natural Sciences, Chemistry, Medicinal Chemistry +8

The use of partially restricted molecular orbitals to investigate transmission mechanisms of spin-spin coupling constants. II. the σ and π contributions to the Fermi contact, orbital, and spin-dipolar terms of SCPT-INDO CC coupling constants

Alejandro R. Engelmann, Gustavo E. Scuseria, Rubén H. Contreras · Journal of Magnetic Resonance (1969) · 1982 · 28 citations

Natural Sciences, Chemistry, Physics +17