Gyula Pályi

In the present article, we illustrate and analyze the co-authorship network of Paul G. Mezey, focusing only on his collaborations on chirality-related papers. We consider scientific works from the Web of Science database as of 10 April 2024. Unlike previous studies on co-authorship networks, this network allows parallel edges, indicating multiple collaborations between the scientists involved. We also present a co-authorship network based on articles citing Mezey’s chirality-related papers (excluding self-citations), examining its main communities detected. Publications on the development of the theoretical and mathematical background of the new ideas on chirality are also considered.

The medieval respect towards progenitors induced not only sentimental feelings but also practical steps, such as sponsoring works of art. In the present study, the family connections of Landgrave Hermann I of Thuringia to the Carolingians and to (Saint) Guillaume/Guilhem d’Orange, from the family of the Counts of Autun, have been explored. The possibility of the role of these kinships as a “driving force” behind initiating and sponsoring the epos Willehalm of Wolfram von Eschenbach has been analyzed.

Beatrix Frangepán (* c. 1480, +(27 March) 1510) from the Counts of Veglia (Krk), Modrus and Zengg was a descendant from one of the leading families of the Hungarian–CroatianHungarian–Croatian late Medieval Kingdom. She became wife of Crown Prince János Corvinus-Hunyadi and later of Margrave Georg Hohenzollern-Brandenburg. From her first marriage, she had three children. One of these, Kristóf, who died young, was buried together with his father in Lepoglava (Croatia). Recently, successful archaeogenetic analyses have been performed on the remains of János and Kristóf Corvinus-Hunyadi; and in the course of these studies, the family background of Kristóf’s mother, Beatrix Frangepán, became an important factor. The present study provides a nine-generation family tree of Beatrix Frangepan as a complementary data pool for an eventual expansion of the archaeogenetic studies. Preliminary results of archaeological study of the supposed grave of Beatrix Frangepán are also reported.

Béla III from the Árpád dynasty, who later became the King of Hungary and Croatia, was previously the heir to the Byzantine Imperial Throne. Some genealogical aspects of this unusual individual are collected in the present study. Possible archaeogenetic relevance is also discussed.

The family background of Agatha, the mother of Margaret of Scotland, is still one of the not yet fully clarified questions of Medieval European history. Here, the possibility that she could have been the daughter of Prince Imre, heir of the Hungarian throne, from the Árpád family and his wife, daughter of Romanos III Argyros, Emperor of the East Roman Empire, is discussed.

Diphosphorous (P₂) side-on coordinated to a dicobalt (Co–Co) moiety was described 45 years ago. This discovery had several links to actual problems of homogeneous molecular catalysis. The new type of organometallic complexes induced several ingenious new ramifications in main-group/transition metal cluster chemistry in the last decades. The present review traces the main lines of these research results and their contacts to actual problems of industrial catalysis.

Long‐armed multifunctional organosilicon molecules display self‐replicating and self‐perfecting behavior in asymmetric autocatalysis (Soai reaction). Two representatives of this class were studied by statistical methods aiming at determination of probabilities of natural abundance chiral isotopomers.The results, reported here, show an astonishing richness of possibilities of the formation of chiral isotopically substituted derivatives. This feature could serve as a model for the evolution of biological chirality in prebiotic and early biotic stereochemistry.

Solutions of very low concentrations cannot be treated by the usual concept of concentration. Stochastic calculations are performed for the analysis of such solutions containing one or a few molecule(s). It is concluded that these systems escape the usual concentration parameters. Two “case histories” are also shown for demonstration of the practical consequences of the theoretical analysis.