Phonon mediated interaction for triplet pairing in Pd

The pairing interaction due to phonon exchange is calculated for the triplet p-state of Pd, using the atomic-site representation for the heavy d electrons. It is found that this interaction is repulsive, λ^Ph₁ < 0, and that its magnitude is small compared with the singlet s-state interaction of BCS, λ^Ph₀. The net interaction due to both phonons and spin-fluctuations is attractive but it is so small that the observation of a triplet p-state in Pd appears unlikely at the lowest accessible temperatures.     

(Phosphinomethylen)phosphane, 1,3,4,6-tetraphosphahexadiene-(1,5) und neue 1,3-diphosphetane aus R-N=CCl2 und PhPTms2

Interaction of different halogenated isocyanide dichlorides with phenylbis(trimethylsilyl)phosphine either yields 1,3,4,6-tetraphosphahexadienes-(1,5) via the (phosphinomethylene)phosphines or 1,3-diphosphetanes by way of the “monophosphacarbodiimides”.     

Messung der Korrelation zwischen Beta- und zirkularpolarisierter Gammastrahlung im Zusammenhang mit der Nichterhaltung der Parität

Parity violation in beta decay was investigated by measuring the (beta, gamma) circular polarization correlation. The asymmetry coefficients were redetermined with higher accuracy for Co 60 (A=? 0,33±0,01) and Na 22 (A=+0,36±0,08). The cosΘ-dependence of the polarizationP was verified for the allowed beta transition of Co 60. Measurements on Zr 95 indicated a large GT-F-mixture and allowed to determine the relative magnitude of the matrix elements. For the first forbidden 2,3 MeV transition of Sb 124 the results are in agreement with the assumtion of an anomalously large value of the matrix elementB _ij compared to all other nuclear matrix elements.     

Phospha-alkene durch thermische,basen- oder metall-induzierte eliminierung

Thermal, base- and metal- induced 1,2-elimination reactions at P-halogen phosphanes of the type RP(Hal)-C(X)R¹R² were used for the preparation of phospha-alkenes with a new-type pattern of substitution at the (PC)-double-bond. The different methods are discussed in more detail.