Neutral Adducts of Molybdenum Hexafluoride: Structure and Bonding in MoF(NCH) and MoF(NCH).

The first Lewis acid base adducts of MoF and an organic base have been synthesized, i. e., MoF(NCH) and MoF(NCH).

SDS-induced hexameric oligomerization of myotoxin-II from Bothrops asper assessed by sedimentation velocity and nuclear magnetic resonance.

We report the solution behavior, oligomerization state, and structural details of myotoxin-II purified from the venom of Bothrops asper in the presence and absence of sodium dodecyl sulfate (SDS) and multiple lipids, as examined by analytical ultracentrifugation and nuclear magnetic resonance. Molecular functional and structural details of the myotoxic mechanism of group II Lys-49 phospholipase A homologues have been only partially elucidated so far, and conflicting observations have been reported in the literature regarding the monomeric vs. oligomeric state of these toxins in solution.

Effects of feeding a pine-based biochar to beef cattle on subsequent manure nutrients, organic matter composition and greenhouse gas emissions.

Biochar in ruminant diets is being assessed as a method for simultaneously improving animal production and reducing enteric CH emissions, but little is known about subsequent biochar-manure interactions post-excretion. We examined chemical properties, greenhouse gas (GHG) emissions and organic matter (OM) composition during farm scale stockpiling (SP) or composting (CP) of manure from cattle that either received a pine-based biochar in their diet (BM) or did not (RM). Manure piles were monitored hourly for temperature and weekly for top surface CO, NO and CH fluxes over 90 d in a semiarid location near Lethbridge, AB, Canada.

Chalcogen versus Dative Bonding in [SF] Lewis Acid-Base Adducts: [SF(NCCH)], [SF(NCH)], and [SF(phen)] (phen = 1,10-phenanthroline).

The Lewis-acid behavior of [SF][MF] (M = Sb, As) salts toward mono- and bidentate nitrogen bases was explored. Reactions of [SF][MF] with excesses of CHCN and CHN yielded [SF(L)] (L = CHCN, CHN) salts, whereas the reaction of [SF][SbF] with equimolar 1,10-phenanthroline (phen) in CHCN afforded [SF(phen)][SbF]·2CHCN. Salts of these cations were characterized by low-temperature X-ray crystallography and Raman spectroscopy in the solid state as well as by F NMR spectroscopy in solution.

Molecular speciation and aromaticity of biochar-manure: Insights from elemental, stable isotope and solid-state DPMAS C NMR analyses.

The use of biochar (BC) in feedlot cattle diets has recently been explored as an approach to simultaneously improving animal production and reducing enteric methane (CH) emissions. This study examines the impact of BC on manure properties and whether BC affects manure composition and carbon (C) and nitrogen (N) outputs from feedlot steers offered a barley-based diet with BC at 0.0, 0.