Syntheses, crystal structure and theoretical investigation of novel heteroleptic complexes of nickel(II) with N-R-sulfonyldithiocarbimate and phosphine ligands

Five new complexes of general formula: [Ni(RSO(2)N=CS(2))(dppe)], where R = C(6)H(5) (1), 4-ClC(6)H(4) (2), 4-BrC(6)H(4) (3), 4-IC(6)H(4) (4) and dppe = 1,2-bis(diphenylphosphino) ethane and [Ni(4-IC(6)H(4)SO(2)N=CS(2))(PPh(3))(2)] (5), where PPh3 = triphenylphosphine, were obtained in crystalline form by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate K(2)(RSO(2)N=CS(2)) and dppe or PPh(3) with nickel(II) chloride in ethanol/water. The elemental analyses and the IR, (1)H NMR, (13)C NMR and (31)P NMR spectra are consistent with the formation of the square planar nickel(II) complexes with mixed ligands. All complexes were also characterized by X-ray diffraction techniques and present a distorted cis-NiS(2)P(2) square-planar configuration around the Ni atom. Quantum chemical calculations reproduced the crystallographic structures and are in accord with the spectroscopic data. Rare C-H center dot center dot center dot Ni intramolecular short contact interactions were observed in the complexes 1-5. (C) 2011 Elsevier B. V. All rights reserved.

Effect of Cervitec (R) on mutans streptococci in plaque and on caries formation on occlusal fissures of erupting permanent molars

The aim of this study was to evaluate the effect of Cervitec(R) on the abundance of mutans streptococci (MS) in occlusal dental plaque and on 2-year caries increment of partly erupting first permanent molars. Sixteen healthy schoolchildren aged 6-8 years, with at least 2 sound contralateral partly erupted permanent molars, received diet counselling and daily parental supervised toothbrushing with a fluoride dentifrice. Stimulated saliva samples were collected at baseline and after 1 year to evaluate MS levels. In a split-mouth design, Cervitec varnish was applied to one of the teeth at baseline and after 3 and 6 months, while the other tooth in the same jaw was a control. At the 9-month follow-up the teeth were in occlusal contact. At this time, varnish was not applied. At 3 and 6 months after the first application of varnish a significant suppression of MS was observed in plaque. Caries investigations, performed at baseline and every 3 months during the 2 years after the start of the study, showed that all the teeth treated with the varnish were free of caries after 2 years, whereas 8/16 control teeth developed incipient caries. In conclusion, our results suggest that treatment with Cervitec reduces MS in plaque on erupting permanent molars and can lead to a significant decrease in caries incidence. Copyright (C) 2002 S. Karger AG, Basel.

ʻAyn al-aʻyān: kitāb tafsīr al-Fātiḥah

lil-ʻālim al-rabbānī wa-al-ʻārif al-ṣamadānī Shaykh al-Islām wa-murshid al-Muslimīn marjiʻ al-ʻulamāʼ wa-al-ṣāliḥīn al-taqī al-ṣāliḥ wa-al-naqī al-fāliḥ al-ʻālim al-ʻāmil Shams al-Dīn Muḥammad ibn Ḥamzah al-Fanārī.

Hādhihi awāʼil khuṭbat Tafsīr al-Baghawī : manuscript, [ca. 1567]

Bound with: Hādhihi qaṣīdah al-musammāh bi-Lāmīyat al-ʻajam / lil-Ṭughrāʼī.

al- Murūr bayna al-ʻalamayn ilá mufākharat al-Ḥaramayn / taʼlīf al-shaykh Nūr al-Dīn Abī al-Ḥasan ʻAlī ibn Jamāl al-Dīn Yūsuf al-Zarandī al-Anṣārī al-Madanī al-Ḥanafī : manuscript ; [ca. 1567]

Bound with: Hādhihi al-qaṣīdah al-musammāh bi-Lāmīyat al-ʻajam / lil-Ṭughrāʼī.

Sonaten für Klavier und Violine /

1. K.293d (305)- 2. K.293c (303)- 3. K.300ℓ (306)- 4. K.300c (304)-5. K.293b (302)- 6. K.293a (301)- 7. K.374d (376)- 8. K.296.- 9. K.374e (377)-10. K.317d (378)- 11. K.373a (379)- 12. K.374f (380)- 13. K.385e (402)- 14. K.570.- 15. K.454.- 16. K.481.- 17. K.526.- 18. K.547.- 19. K.385c (403)

R.P. Jacobi Tirini ... In universam Sacram Scripturam commentarius.

Mode of access: Internet.

R.P. Francisci Suarez ... Defensio fidei catholicae et Apostolicae aduersus Anglicanae sectae errores ... : Operum tomus vicesimus primus

Mode of access: Internet.

(Table 1, page 376), Composition of manganese deposits from the Gulf of Aden and the Carlsberg Ridge

Iron-manganese nodules from the ocean floor have been extensively studied. But, because of the fine grain size of the particles of the nodules, structural identification by X-ray and electron diffraction techniques is difficult and the mineralogy of the iron oxide phase has not been well characterized. The observation of the Mössbauer spectrum-in which each nucleus absorbs gamma-rays independently-is not limited by particle size in the same way as is the observation of Bragg peaks in diffraction measurements, in which radiation must be scattered coherently from a large number of atoms. The magnetic hyperfine splitting in the Mössbauer spectrum of magnetic materials is affected, however, when the particles are so small that they become superparamagnetic. We describe here an investigation using the 57Fe Mössbauer effect of two iron-manganese nodules in which the iron oxide phase could not be detected by X-ray or electron diffraction.

Confirmatory factor analysis of the Way of Coping Checklist-Revised (WCCL-R) in the Asian context

Industrial employment growth has been one of the most dynamic areas of expansion in Asia; however, current trends in industrialised working environments have resulted in greater employee stress. Despite research showing that cultural values affect the way people cope with stress, there is a dearth of psychometrically established tools for use in non-Western countries to measure these constructs. Studies of the "Way of Coping Checklist-Revised" (WCCL-R) in the West suggest that the WCCL-R has good psychometric properties, but its applicability in the East is still understudied. A confirmatory factor analysis (CFA) is used to validate the WCCL-R constructs in an Asian population. This study used 1,314 participants from Indonesia, Sri Lanka, Singapore, and Thailand. An initial exploratory factor analysis revealed that original structures were not confirmed; however, a subsequent EFA and CFA showed that a 38-item, five-factor structure model was confirmed. The revised WCCL-R in the Asian sample was also found to have good reliability and sound construct and concurrent validity. The 38-item structure of the WCCL-R has considerable potential in future occupational stress-related research in Asian countries.