6-Methyl-2-butylureidopyrimidone dimerizes via four hydrogen bonds in the solid state as
well as in CHCl 3 solution via a donor−donor−acceptor−acceptor (DDAA) array of hydrogen …

Highly stable dimers are formed in solution and in the solid state by a class of readily
synthesized, self‐complementary building blocks for supramolecular chemistry, which associate …

Self‐assembly of cyclic bis‐urea compounds takes place even at low concentrations to form
very thin fibers which give a three‐dimensional network in the solvent. The X‐ray structure …

The association behavior of several 2,4-diamino-s-triazines, 2,6-diaminopyridines, and their
acylated derivatives with uracil derivatives was studied. In solution 1 H-NMR and IR …

The three isomeric dichlororuthenium(II) complexes α-, β-, and γ-[Ru(azpy) 2 Cl 2 ] (azpy = 2-phenylazopyridine)
have been investigated for their cytotoxic properties against a series of …

Distillation has held a very strong position in the chemical process industries for well over a
century, and has, as a separation method, been around for millennia. The process can be …

We studied retrospectively the outcome of patellofemoral arthroplasty (PFA) using the
Richards prosthesis in 51 patients (56 knees). Their mean age was 50 years (30 to 77). In 43 …

… all react with H 2 O 2 to generate the purple low-spin [(N4Py)Fe III OOH] 2+ intermediate (6).
In the case of 1, titration experiments with H 2 O 2 monitored by UV/vis and 1 H NMR reveal …

Simple formulas for estimating the Maxwell-Stefan diffusion coefficients in multicomponent
liquid mixtures are described based on a geometrically consistent generalization of the …

… • H stands for heat or enthalpy balances (processes conserve energy, as well as mass). …
HARRY KOOIJMAN is a research distillation specialist at the Amsterdam laboratory of Shell …