Treatment of the chloro-substituted diboradiferrocene derivative 1 with Me(3)SiOMe and subsequent hydrolysis resulted in formation of the novel organometallic bis(borinic acid) derivative 3. The assembly of 3 into supramolecular structures via hydrogen bonding and reversible covalent boron-oxygen bond formation was explored. Upon crystallization from acetone or THF one-dimensional chains form in which molecules of 3 alternately serve as hydrogen bond donors and acceptors. The additional OH hydrogens that are not involved in hydrogen bonding within the polymeric chains undergo hydrogen bonding to the solvent molecules. Removal of the solvent was achieved at moderate temperature under high vacuum. While the polymeric chains remain intact, in the absence of the solvent as a hydrogen bond acceptor, short contacts to the Cp rings of neighboring polymer strands lead to a network-like structure. At higher temperatures, further dehydration occurs with formation of B-O-B linkages as confirmed by MALDI-TOF mass spectrometry. Oligomers with up to 15 repeating units (30 ferrocenes) were detected.
FielDHub is an R Shiny design of experiments (DOE) app that aids in the creation of traditional, unreplicated, augmented and partially-replicated (Cullis et al., 2006) designs applied to agriculture, plant breeding, forestry, animal and biological sciences. One of the problems that life scientists often face is the lack of freely available and user-friendly interactive tools to create designs that fit their needs. A few open-source DOE R packages options exist including agricolae (de Mendiburu & Yaseen, 2020) and blocksdesign (Edmondson, 2021), but they require users to be familiar with the R programming language and do not have a graphical user interface (GUI).
‘ND Frohberg’ (Reg. no. CV‐1200, PI 698310) is a hard‐red spring wheat (HRSW; Triticum aestivum L.) developed at North Dakota State University (NDSU) and released by the North Dakota Agricultural Experiment Station (NDAES) in 2020. ND Frohberg was selected from the cross ND709‐9/ND2902. ND709‐9 was an experimental line with the pedigree (ND 2709/3/’Grandin’*3//’Ramsey’/ND 622). ND2902 was an experimental line with the pedigree (ND674//ND2710/ND688). It was tested as experimental line NDHRS16‐13‐97 and released because of improved straw strength, yield potential, strong disease resistance and end‐use quality. ND Frohberg is highly resistant to stem rust (caused by Puccinia graminis f.sp. tritici), and moderately resistant to leaf rust (caused by Puccinia triticina), bacterial leaf streak (caused by Xanthomonas translucens pv. undulosa), and Fusarium head blight (caused by Fusarium graminearum). The name ND Frohberg was chosen to honor Dr. Richard Frohberg, hard red spring wheat breeder at NDSU for 37 years. During his tenure at NDSU, Dr. Frohberg's varieties were widely cultivated, reaching as much as 65% of the acreage in North Dakota in 2003. He was responsible for the cross that resulted in this variety.
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