An overview of floral and faunal diversity in and around Barrackpore Rastraguru Surendranath College Campuses, West Bengal, India

The present survey based study involves the qualitative diversity of flora and fauna. The diversity assessment was carried out at two campuses of Barrackpore Rastraguru Surendranath College. This extensive study reveals the presence of 256 floral species and 165 faunal species in and around college campuses. The huge faunal diversity is mainly due to high level of floral diversity, which establishes the area as resource-rich habitat with promising reservoir of species. This is the very first effort in exploring the natural wealth of Barrackpore Rastraguru Surendranath College campuses. DOI: http://dx.doi.org/10.5281/zenodo.369591

Study of aquatic biodiversity and correlation with physical parameters of Jalangi river

The present study is concerned to assess the present status of aquatic biodiversity and its correlation with few physical parameters of river Jalangi. The study shows more than 35 species of freshwater fishes, eight species of zooplanktons, four species of dragonflies and two species of damselflies, few species of mollusks, which reflects that the river Janangi is full of diversity with respect to flora and fauna. The river is full of eel grass. River Jalangi is also a habitat of water striders, few crab species and aquatic snakes. In few areas, pollution may affect the present ecological status of Jalangi River in near future. This preliminary study identifies the overall biodiversity status of Jalangi. However, more work in this direction is required to make complete database on floral and faunal diversity of this river. DOI: http://dx.doi.org/10.5281/zenodo.451652

Synthesis, characterization and antimicrobial activity of some nickel, cadmium and mercury complexes of 5-methyl-3yl-N-(2′-methylthiophenyl)-methyleneimine, (MPzOATA) ligand

S.M. is thankful to the U.G.C., Govt. of India for providing financial support in the form of fellowship (videUGC Award No.: File No. 17-81/2008 (SA-I) dated: 04.1.2011). The financial support received from the University of Kalyani in the form of Personal Research Grant is thankfully acknowledged.Abstract Herein, we report the syntheses and structures of Ni(II) complexes, [Ni(MPzOATA)2] (Cl) (PF6) ( I ), [Ni(MPzOATA)2](ClO4)2.CH3CN (II) & [Ni(MPzOATA)2](BF4)2.H2O ( III ); Cd(II) complex, [Cd(MPzOATA)Cl2]2 ( IV ) and a Hg(II) complex, [Hg(MPzOATA)Cl2] ( V ), of a pyrazole based ‘NNS’ donor ligand, 5-methylpyrazole-3yl-N-(2′-methylthiophenyl)methyleneimine, (MPzOATA). The complexes are characterized byelemental analyses,electronic, IR, 1H NMR (only for IV & V ) spectral parameters, conductivity and fluorescence measurements. X-ray crystallographic data of the complexes reveal that the Ni(II) complexes have NiN4S2 octahedral coordination, one of them is a mixed-anion complex having Cl− and PF6− as counter anions; the Cd(II) complex is a chloro bridged binuclear complex with octahedral coordinationenvironment aroundeach metal centre, while the Hg(II) complex is a square pyramidal one. Among the reported complex species, the Ni(II) complexes are non-fluorescent, while the Cd(II) and Hg(II) complexes can be used as potential photoactive materials as indicated from their characteristicemission properties. The reported complexes are screened for their antimicrobial activities against some Gram positive and Gram negative microbial strains, and they are found to be potential antimicrobial agents in broad spectrum against both Gram positive and Gram negative bacteria.PostprintPeer reviewe

An overview of floral and faunal diversity in and around Barrackpore Rastraguru Surendranath College Campuses, West Bengal, India

The present survey based study involves the qualitative diversity of flora and fauna. The diversity assessment was carried out at two campuses of Barrackpore Rastraguru Surendranath College. This extensive study reveals the presence of 256 floral species and 165 faunal species in and around college campuses. The huge faunal diversity is mainly due to high level of floral diversity, which establishes the area as resource-rich habitat with promising reservoir of species. This is the very first effort in exploring the natural wealth of Barrackpore Rastraguru Surendranath College campuses. DOI: http://dx.doi.org/10.5281/zenodo.369591

<span style="font-size:11.0pt;font-family:"Calibri","sans-serif"; mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Calibri;mso-fareast-theme-font: minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-IN;mso-fareast-language: EN-US;mso-bidi-language:AR-SA">Interaction of some azole bases with [Pt(dien)Br]⁺ : Conductometric and spectrophotometric studies</span>

656-659Kinetics of the reaction of four azole bases (e.g., imidazole, benzimidazole, pyrazole and triazole) with [Pt(dien)Br] + (dien = diethylenetriamine) has been studied in aqueous solution (27°C) by conductometric and spectrophotometric methods. The reactions follow normal square-planar substitution having the rate law Linder pseudo-first order condition, kobs  = k1 + k2 [azole base]. The aged solution of [Pt(dien)Br] +  shows biphasic reaction traces due to formation of the reactive [Pt(dien)(H2O)]2+ in solution. The adducts formed with these bases have been isolated and characterised.</span

Experimental and Computational Study of Counterintuitive ClO4(-)···ClO4(-) Interactions and the Interplay between pi+···pi and Anion···pi+ Interactions

[eng] The novel noncovalent interactions between the charged and neutral aromatic rings and with anions are utilized to design the solid-state assembly of triply protonated PTPH3 (PTP = 4′-(4-pyridyl)-3,2′:6′,3″-terpyridine) with H2O and three ClO4 −, which is synthesized and characterized by single-crystal X-ray diffraction analysis. Crystallography reveals that the π+−π+, π+−π, and various anion···π interactions are the major driving forces in the stabilization of the self-assembled structure. In the title complex, a layered assembly is formed through the mutual influence of π+−π+ and π+−π interactions. The anions are interacting with the charged π-acceptors, which are again stabilized through π+−π interactions. Therefore, the overall stabilization is governed through π+−π/π−π+, (π+−π+)n, and anion···π+/π+−π/π−π+ networks in the solid state. The interaction energies of the main driving forces observed in the crystal structure have been calculated using density functional theory. In addition, the short O···O contact between ClO4 − anions has been analyzed in detail both computationally and exploring the Cambridge Structural Database

pH Dependent Formation of Unprecedented Water¿Bromide Cluster in the Bromide Salts of PTP Assisted by Anion-pi Interactions: Synthesis, Structure, and DFT Study

[eng] Two new terpyridine derivatives [PTPH3](Br)3· 3H2O (1) and [PTPH3](Br3)(Br)2·H2O (2), (PTP = 4′-(4- pyridyl)-2,2′:6′,2″-terpyridine) were synthesized and characterized by single crystal X-ray diffraction analyses. In 1, intricate combination of anion···π/π−π/π···anion interactions generates the supramolecular network while 2 exhibits a combination of two different anion···π/ π−π/π···anion and anion···π···anion assemblies. As anticipated, both of them are interlinked through hydrogen bonds affording molecular networks, but surprisingly, 1 shows hydrate aggregation and interactions with anions to generate water−bromide cluster blends in the solid lattices. A search of the crystal structure database (CSD) yielded only eight hits presenting an infinite tape in the solid state structure formed by bromide anions and water molecules, none of which had similar distribution of bromide and water as observed in 1. Interestingly, in compound 1, the bromide anion is involved in the formation of anion−water cluster and also engaged in anion···π interactions, thus generating a unique cluster of water−anion/anion···π/π−π/π···anion/anion−water cluster network. The different networks have been investigated by means of DFT calculations and the interactions characterized using the Bader's theory of "atoms-in-molecules