A new manganadecaborane has been isolated as a previously unsuspected product from the reaction of [Mn(CO)(5)Br] with K[B(9)H(14)]. The anion of tetrabutylammonium 5-bromo-6,6,6-tricarbonyl-6-manganadodecahydrodecaborate(1-), (C(16)H(36)N)[Mn(B(9)H(12)Br)(CO)(3)], has a nido cage structure. The Mn atom is bonded through three B--Mn bonds of similar length [2.221 (4), 2.224 (3) and 2.236 (3) A] and two bridging H atoms. The position of the bromo substituent breaks the twofold symmetry of the cage found in simple analogues, and this is reflected in the B--B bond parameters.
Abstract The mass spectra and thermal decomposition of Rhodamine F5G hydrochloride have been studied in detail. Fragmentation schemes are presented which show that fragmentation in the mass spectrometer involves principally the substituents on the 9‐phenylxanthhydrol nucleus. Mass spectral studies of the related compounds Rhodamine B500 hydrochloride, Rhodamine F5G hydroxide and Rhodamine F5G dihydrogen phosphate are also reported. The thermal decomposition of Rhodamine F5G hydrochloride leads to initial loss of ethyl chloride and formation of the zwitterion which rearranges at higher temperature to a lactone. The further pyrolysis has also been studied.
Summary Two types of interrelated soft-sediment deformation (D 0 ) structures are described, disturbed bedding and folds. Disturbed bedding varies from pinch-and-swell bed(s) to lenticular boudins. Folds are variable in style and scale; one fold is associated with a welded contact, two with décollement zones. All structures are stratabound. The structures are considered to be the product of dewatering of channel infill deposits combined with slope instabilities caused by channeling and/or penecontemporaneous volcanism. Packages of beds of alternating, opposed younging direction are also present and predate tectonic folds and cleavage. These structures may correlate with either D 0 or represent an intermediate stage between D 0 and post-lithification D 1 tectonic structures.
Iron(II) complexes of the general formula [Fe{BH3(CN)}2{P(OR)3}4](R = Me or Et) have been prepared both metathetically, by the reaction of FeCl2.2H2O with Na[BH3(CN)] and the appropriate phosphite, in either methanol or acetonitrile, or electrochemically by the anodic dissolution of iron in acetonitrile solutions of the phosphite and Na[BH3(CN)]. The metathetical reactions carried out in methanol give the trans isomers only, as shown by the 1H n.m.r., 31P-{1H} n.m.r., and i.r. spectra of the products. In acetonitrile, the metathetical reactions yield mixtures of isomers in the cis: trans ratio of ca. 30 : 70, as shown by 1H n.m.r. and i.r. spectra, supported by thin-layer chromatographic analysis. For R = Me, the electrochemical reaction in acetonitrile yields a mixture containing ca. 65% of the cis isomer. Where R = Et however, the cis content is ca. 30%. These observations are discussed.
Reaction of BF3·OEt2 with 3 (BunLi·HMPA)[HMPA = OP(NMe2)3] has been monitored by variable-temperature 7Li and 11B n.m.r. spectroscopy and shown to produce a highly arene-soluble, crystalline complex, LiBF4·4HMPA, (1); spectroscopic, cryoscopic, and conductimetric measurements indicate that this exists in solution as tight lithium and tetrafluoroborate components held by Li ⋯ F interactions.
The preparation of Be(B3H8)2 from TlB3H8 and BeCl2 is reported; a study of its 270 MHz 1H and 87·6 MHz 11B F.T. n.m.r. spectra over a range of temperatures using spin decoupling and line narrowing techniques has resulted in the identification of its low temperature static configuration and intermediate and high temperature fluxional forms.
Protein networks have become a popular tool for analyzing and visualizing the often long lists of proteins or genes obtained from proteomics and other high-throughput technologies. One of the most popular sources of such networks is the STRING database, which provides protein networks for more than 2000 organisms, including both physical interactions from experimental data and functional associations from curated pathways, automatic text mining, and prediction methods. However, its web interface is mainly intended for inspection of small networks and their underlying evidence. The Cytoscape software, on the other hand, is much better suited for working with large networks and offers greater flexibility in terms of network analysis, import, and visualization of additional data. To include both resources in the same workflow, we created stringApp, a Cytoscape app that makes it easy to import STRING networks into Cytoscape, retains the appearance and many of the features of STRING, and integrates data from associated databases. Here, we introduce many of the stringApp features and show how they can be used to carry out complex network analysis and visualization tasks on a typical proteomics data set, all through the Cytoscape user interface. stringApp is freely available from the Cytoscape app store: http://apps.cytoscape.org/apps/stringapp.
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