Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 3411-48-1, is researched, SMILESS is C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2, Molecular C30H21PJournal, Marine Chemistry called Characterization of minerals and organic phosphorus species in marine sediments using soft x-ray fluorescence spectromicroscopy, Author is Brandes, Jay A.; Ingall, Ellery; Paterson, David, the main research direction is mineral organic phosphorus species marine sediment; soft Xray fluorescence spectromicroscopy.Synthetic Route of C30H21P.
Phosphorus Near Edge X-ray Fluorescence Spectroscopy (P-NEXFS) data were collected on phosphorus containing phases including organic and inorganic compounds and minerals. Although phases containing P in the plus five oxidation state P(V) in a tetrahedral PO4 structure have similar primary fluorescence peak positions, the size, shape, and positions of secondary spectral features are diagnostic for different compounds and minerals. In particular, Ca phosphates exhibited a notable post-peak shoulder at 2154.5 eV, while oxidized iron phosphates had a distinctive pre-peak feature at 2148 eV. Polyphosphates have a broad secondary peak located ∼2 eV higher in energy than a similar feature in phosphate esters and diesters. Compounds containing P(V) in structures other than PO4 tetrahedra such as phosphonates have a primary peak shifted ∼1 eV lower than corresponding organo-phosphates. Organo-phosphates with P in the plus 3 oxidation state P(III) such as phosphines had primary fluorescence peaks shifted still further down in energy (2-3 eV). The substitution of aromatic C groups in close proximity to P structures in organic compounds generated both pre- and post-peak features as well as a number of secondary peaks. X-ray fluorescence mapping of P, Si, Al, Mg, and Na was conducted on a marine sediment sample with sub-micron spatial resolution Phosphorus was heterogeneously distributed in the sample and not correlated on a broad scale with any other element examined Much of the P present in the sample was located in small, 0.6-8 μm size, P-rich domains. Several P-rich regions were examined with P-NEXFS using a focused beam with 60 nm resolution and were found to consist of either calcium phosphate or polyphosphate phases. The presence of significant polyphosphate-dominated regions in a marine sediment sample supports the recent observations that such phases can play an important role in marine P cycling. The combination of fluorescence mapping and P-NEXFS data collection on fine particles provides a powerful new tool for environmental phosphorus studies.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis