Dirac–Fock one-centre calculations show (114)H4 to resemble PbH4


RELATIVISTIC effects have a considerable influence on the chemical behaviour of the heavier elements. Our Dirac–Fock one-centre expansion calculations1–3 indicate that the X–H bond lengths, Re, suffer a relativistic contraction of about 5% for PbH4 (ref. 1) or AuH (ref. 2) and 7% for TlH (ref. 3). If the relativistic effects are included, however, these Re… (More)
DOI: 10.1038/266336a0


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