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Cappuccino C, Mazzeo PP, Salzillo T, Venuti E, Giunchi A, Della Valle RG, Brillante A, Bettini C, Melucci M, Maini L. A synergic approach of X-ray powder diffraction and Raman spectroscopy for crystal structure determination of 2,3-thienoimide capped oligothiophenes. Phys Chem Chem Phys 2018; 20:3630-3636. [DOI: 10.1039/c7cp06679a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents a Raman based approach for the rapid identification of the molecular conformation in a series of new 2,3-thienoimide capped quaterthiophenes.
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Affiliation(s)
- C. Cappuccino
- Department of Chemistry “Giacomo Ciamician”
- Via Selmi 2 – University of Bologna
- Bologna
- Italy
| | - P. P. Mazzeo
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università of Parma
- Parma
- Italy
| | - T. Salzillo
- Department of Industrial Chemistry “Toso Montanari” and INSTM-UdR Bologna
- Viale del Risorgimento
- 4 – University of Bologna
- I-40136 Bologna
- Italy
| | - E. Venuti
- Department of Industrial Chemistry “Toso Montanari” and INSTM-UdR Bologna
- Viale del Risorgimento
- 4 – University of Bologna
- I-40136 Bologna
- Italy
| | - A. Giunchi
- Department of Industrial Chemistry “Toso Montanari” and INSTM-UdR Bologna
- Viale del Risorgimento
- 4 – University of Bologna
- I-40136 Bologna
- Italy
| | - R. G. Della Valle
- Department of Industrial Chemistry “Toso Montanari” and INSTM-UdR Bologna
- Viale del Risorgimento
- 4 – University of Bologna
- I-40136 Bologna
- Italy
| | - A. Brillante
- Department of Industrial Chemistry “Toso Montanari” and INSTM-UdR Bologna
- Viale del Risorgimento
- 4 – University of Bologna
- I-40136 Bologna
- Italy
| | - C. Bettini
- Consiglio Nazionale delle Ricerche – Istituto per la Sintesi Organica e per la Fotoreattività (CNR-ISOF) Via P. Gobetti 101
- 40129 Bologna
- Italy
| | - M. Melucci
- Consiglio Nazionale delle Ricerche – Istituto per la Sintesi Organica e per la Fotoreattività (CNR-ISOF) Via P. Gobetti 101
- 40129 Bologna
- Italy
| | - L. Maini
- Department of Chemistry “Giacomo Ciamician”
- Via Selmi 2 – University of Bologna
- Bologna
- Italy
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Cheah E, Venuti E, McKay K, Gaskin K. ePS05.6 Cessation of pancreatic enzyme replacement therapy (PERT) after initiation of therapy with ivacaftor – a case series. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30165-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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McKay K, Cheah E, Venuti E, Gaskin K. 231 The effect of ivacaftor on exocrine pancreatic function in patients with cystic fibrosis and the G551D CFTR mutation who are naïve for ivacaftor. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30406-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bacchi A, Brillante A, Crocco D, Chierotti MR, Della Valle RG, Girlando A, Masino M, Pelagatti P, Venuti E. Exploration of the polymorph landscape for 1,1,4,4-tetraphenyl-1,3-butadiene. CrystEngComm 2014. [DOI: 10.1039/c4ce01046a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The solid state behaviour of 1,1,4,4-tetraphenyl-1,3-butadiene (TPB), a well-known blue luminescent molecule, is presented. The crystal structures of four polymorphs and one solvate form are discussed and the experimental occurrence of the four polymorphs is rationalized.
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Affiliation(s)
- A. Bacchi
- Department of Chemistry
- University of Parma
- 43124 Parma, Italy
| | - A. Brillante
- Dipartimento di Chimica Industriale ‘Toso Montanari’ and INSTM-UdR Bologna
- Bologna University
- Bologna, Italy
| | - D. Crocco
- Department of Chemistry
- University of Parma
- 43124 Parma, Italy
| | - M. R. Chierotti
- Department of Chemistry and NIS
- University of Torino
- 10125 Torino, Italy
| | - R. G. Della Valle
- Dipartimento di Chimica Industriale ‘Toso Montanari’ and INSTM-UdR Bologna
- Bologna University
- Bologna, Italy
| | - A. Girlando
- Department of Chemistry
- University of Parma
- 43124 Parma, Italy
| | - M. Masino
- Department of Chemistry
- University of Parma
- 43124 Parma, Italy
| | - P. Pelagatti
- Department of Chemistry
- University of Parma
- 43124 Parma, Italy
| | - E. Venuti
- Dipartimento di Chimica Industriale ‘Toso Montanari’ and INSTM-UdR Bologna
- Bologna University
- Bologna, Italy
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Masino M, Girlando A, Brillante A, Della Valle R, Venuti E, Drichko N, Dressel M. Lattice dynamics of TTF–CA across the neutral–ionic transition. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.08.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Day GM, Motherwell WDS, Ammon HL, Boerrigter SXM, Della Valle RG, Venuti E, Dzyabchenko A, Dunitz JD, Schweizer B, van Eijck BP, Erk P, Facelli JC, Bazterra VE, Ferraro MB, Hofmann DWM, Leusen FJJ, Liang C, Pantelides CC, Karamertzanis PG, Price SL, Lewis TC, Nowell H, Torrisi A, Scheraga HA, Arnautova YA, Schmidt MU, Verwer P. A third blind test of crystal structure prediction. Acta Crystallogr B Struct Sci 2005; 61:511-27. [PMID: 16186652 DOI: 10.1107/s0108768105016563] [Citation(s) in RCA: 241] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Accepted: 05/24/2005] [Indexed: 11/10/2022]
Abstract
Following the interest generated by two previous blind tests of crystal structure prediction (CSP1999 and CSP2001), a third such collaborative project (CSP2004) was hosted by the Cambridge Crystallographic Data Centre. A range of methodologies used in searching for and ranking the likelihood of predicted crystal structures is represented amongst the 18 participating research groups, although most are based on the global minimization of the lattice energy. Initially the participants were given molecular diagrams of three molecules and asked to submit three predictions for the most likely crystal structure of each. Unlike earlier blind tests, no restriction was placed on the possible space group of the target crystal structures. Furthermore, Z′ = 2 structures were allowed. Part-way through the test, a partial structure report was discovered for one of the molecules, which could no longer be considered a blind test. Hence, a second molecule from the same category (small, rigid with common atom types) was offered to the participants as a replacement. Success rates within the three submitted predictions were lower than in the previous tests – there was only one successful prediction for any of the three `blind' molecules. For the `simplest' rigid molecule, this lack of success is partly due to the observed structure crystallizing with two molecules in the asymmetric unit. As in the 2001 blind test, there was no success in predicting the structure of the flexible molecule. The results highlight the necessity for better energy models, capable of simultaneously describing conformational and packing energies with high accuracy. There is also a need for improvements in search procedures for crystals with more than one independent molecule, as well as for molecules with conformational flexibility. These are necessary requirements for the prediction of possible thermodynamically favoured polymorphs. Which of these are actually realised is also influenced by as yet insufficiently understood processes of nucleation and crystal growth.
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Affiliation(s)
- G M Day
- The Pfizer Institute for Pharmaceutical Materials Science, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, England.
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Castellucci E, Angeloni L, Marconi G, Venuti E, Baraldi I. Mechanisms of deactivation of the low-lying electronic states of 2,2'-bipyridine. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100368a007] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Grabner G, Koehler G, Marconi G, Monti S, Venuti E. Photophysical properties of methylated phenols in nonpolar solvents. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100372a045] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- L. Farina
- Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - L. Palazzi
- Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - E. Venuti
- Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - R. G. Della Valle
- Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - A. Brillante
- Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
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Di Lonardo G, Fusina L, Venuti E, Johns JWC, El Idrissi MI, Liévin J, Herman M. The vibrational energy pattern in acetylene. V. 13C2H2. J Chem Phys 1999. [DOI: 10.1063/1.479381] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
A simple defined basal medium is presented for the study of proteolytic activity, induction and repression, and protease purification with Serratia marcescens. Since the medium contains no protein, it does not interfere with or present artifact to protein assays, column chromatography, or electrophoresis. The medium consists of the basal salts and buffer medium of Bromke and Hammel (1979) plus a carbon-energy source such as glycerol, calcium chloride for the cation requirement for protease activity, and an amino acid, preferably leucine. Growth parameters and proteolytic activities are presented for unsupplemented medium and for the medium supplemented with each of 18 amino acids. Unsupplemented medium completes the logarithmic phase in 12.5 h of incubation and has a constitutive level of proteolytic activity. Supplementation with any amino acid, except cysteine and tryptophan, increases significantly the proteolytic activity, but has a varied effect on growth parameters.
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Affiliation(s)
- B J Bromke
- Department of Microbiology and Immunology, Philadelphia College of Osteopathic Medicine, PA 19131, USA.
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Brillante A, Della Valle R, Venuti E. Raman phonon spectra and lattice dynamics of 7-methoxycoumarin under pressure. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)01148-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Sixty strains of vancomycin- and ampicillin-resistant Enterococcus faecium were evaluated for their susceptibilities to novobiocin in vitro. In Mueller-Hinton broth, novobiocin inhibited all strains when it was used at a concentration of < or = 2 microgram/ml and 40 of 60 strains when it was used at a concentration of < or = 0.5 micrograms/ml. MICs were 8- to 16-fold higher in 50% serum. Novobiocin alone resulted in 2-log-unit killing at 24 h. Combinations of novobiocin and a fluoroquinolone (either ciprofloxacin or ofloxacin) were additive and bactericidal for quinolone-susceptible strains in either broth or 50% serum. Gentamicin did not affect novobiocin activity, and rifampin and doxycycline were antagonistic.
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Affiliation(s)
- P French
- Dorrance H. Hamilton Laboratories, Department of Medicine, Jefferson Medical College, Philadelphia, Pennsylvania 19107
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Fraimow HS, Venuti E. Inconsistent bactericidal activity of triple-combination therapy with vancomycin, ampicillin, and gentamicin against vancomycin-resistant, highly ampicillin-resistant Enterococcus faecium. Antimicrob Agents Chemother 1992; 36:1563-6. [PMID: 1510455 PMCID: PMC191621 DOI: 10.1128/aac.36.7.1563] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Combination therapy with ampicillin, vancomycin, and gentamicin in vitro against several clinical isolates of vancomycin-resistant, highly ampicillin-resistant Enterococcus faecium, including VanA and VanB strains, was evaluated. The MICs of ampicillin were not significantly decreased by induction with vancomycin, and the combination of ampicillin and vancomycin was not inhibitory for any strain. Triple-combination therapy was least active against highly resistant VanA isolates, achieving a reduction of less than 1 log CFU at 24 h, but demonstrated slightly more activity against VanB strains.
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Affiliation(s)
- H S Fraimow
- Division of Infectious Disease, Jefferson Medical College, Philadelphia, Pennsylvania 19107
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Marconi G, Venuti E. Vibronic activity in the two-photon spectrum of pyrimidine. J Mol Struct 1988. [DOI: 10.1016/s0022-2860(98)80068-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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