{ "access": { "embargo": { "active": false, "reason": null }, "files": "public", "record": "public", "status": "open" }, "created": "2022-01-13T13:53:54.055870+00:00", "custom_fields": { "journal:journal": { "issue": "Feb 2002", "pages": "137-141", "title": "Journal of Indian Chemical Society", "volume": "Vol. 79" } }, "deletion_status": { "is_deleted": false, "status": "P" }, "files": { "count": 1, "enabled": true, "entries": { "137-141.pdf": { "checksum": "md5:668c9f2ac481503d6485006617b36058", "ext": "pdf", "id": "861d7716-3d2f-4a4b-8b03-43001f8143af", "key": "137-141.pdf", "metadata": null, "mimetype": "application/pdf", "size": 642639 } }, "order": [], "total_bytes": 642639 }, "id": "5846040", "is_draft": false, "is_published": true, "links": { "access": "https://zenodo.org/api/records/5846040/access", "access_links": "https://zenodo.org/api/records/5846040/access/links", "access_request": "https://zenodo.org/api/records/5846040/access/request", "access_users": "https://zenodo.org/api/records/5846040/access/users", "archive": "https://zenodo.org/api/records/5846040/files-archive", "archive_media": "https://zenodo.org/api/records/5846040/media-files-archive", "communities": "https://zenodo.org/api/records/5846040/communities", "communities-suggestions": "https://zenodo.org/api/records/5846040/communities-suggestions", "doi": "https://doi.org/10.5281/zenodo.5846040", "draft": "https://zenodo.org/api/records/5846040/draft", "files": "https://zenodo.org/api/records/5846040/files", "latest": "https://zenodo.org/api/records/5846040/versions/latest", "latest_html": "https://zenodo.org/records/5846040/latest", "media_files": "https://zenodo.org/api/records/5846040/media-files", "parent": "https://zenodo.org/api/records/5846039", "parent_doi": "https://zenodo.org/doi/10.5281/zenodo.5846039", "parent_html": "https://zenodo.org/records/5846039", "requests": "https://zenodo.org/api/records/5846040/requests", "reserve_doi": "https://zenodo.org/api/records/5846040/draft/pids/doi", "self": "https://zenodo.org/api/records/5846040", "self_doi": "https://zenodo.org/doi/10.5281/zenodo.5846040", "self_html": "https://zenodo.org/records/5846040", "self_iiif_manifest": "https://zenodo.org/api/iiif/record:5846040/manifest", "self_iiif_sequence": "https://zenodo.org/api/iiif/record:5846040/sequence/default", "versions": "https://zenodo.org/api/records/5846040/versions" }, "media_files": { "count": 0, "enabled": false, "entries": {}, "order": [], "total_bytes": 0 }, "metadata": { "creators": [ { "person_or_org": { "family_name": "G. N. Mukherjee", "name": "G. N. Mukherjee", "type": "personal" } }, { "person_or_org": { "family_name": "P. K. Chakraborty", "name": "P. K. Chakraborty", "type": "personal" } } ], "description": "
Department of Chemistry, University of Calcutta, University College of Science,
\n\n92 Acharya Prafulla Chandra Road, Kolkata-700 009, India
\n\nE-mail: gurunath@cucc.ernet.in Fax: 91-033-3519755/2413222
\n\nBengal Chemical and Pharmaceutical Works, Kolkata-700 009, India
\n\nManuscript received 11 August 2000, revised 13 July 2001, accepted 14 July 2001
\n\nCombined potentiometric and spectrophotometric investigation on the complex formation equilibria of Cull with N-benzenesulfonyl derivatives of some dipeptides, viz. glycylglycine, glycyl-dl-α-alanine, glycyl-dl-methionine, glycyl-β-alanine, β-alanylglycine (AH2) in aqueous solution provides evidence of complexes of the types : Cu(AH)+, Cu(H-1AH), Cu(H-1 Ai, Cu(H-1 A)(OH)2- , Cu(AH)2, Cu(H_1AH)(AH)-, Cu(H-1 AH)\\(_2^2\\)-, Cu(H-1A)(H-1AH)3 and Cu(H_1A)\\(_2^4\\)- .Deprotonation constants (pKHCOOH and pKHSO2NH) of the ligands and formation constants of the complexes at 25 ± 10 in aqueous solution, I = 0.2 M (NaNO3), are correlated with the modes of coordination of the amide and sulfonamide groups, size of the chelate rings, and metal-ligand and ligand-ligand it-interactions. Deprotonation constants of coordinated H2O molecules in the square-planar, or distorted octahedral Cu(H-1A)(H20)- complexes indicate their equatorial disposition. The tendency of the ternary hydroxo complexes, Cu(H_1A)(OH)2- to transform into to Cu(H_1A)\\(_2^4\\)- with precipitation of Cu(OH)2 at pH >9 is found to be in the inverse order of stability constants of these complexes.
", "languages": [ { "id": "eng", "title": { "en": "English" } } ], "publication_date": "2002-02-28", "publisher": "Zenodo", "resource_type": { "id": "publication-article", "title": { "de": "Zeitschriftenartikel", "en": "Journal article" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "Combined potentiometric" }, { "subject": "spectrophotometric" }, { "subject": "equatorial disposition" } ], "title": "Metal complexes of some peptide derivatives. Part-XIV. Complex formation of copper(II) with N-benzenesulfonamides of some dipeptides" }, "parent": { "access": { "owned_by": { "user": 285634 } }, "communities": {}, "id": "5846039", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.5846039", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.5846040", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:5846040", "provider": "oai" } }, "revision_id": 4, "stats": { "all_versions": { "data_volume": 18636531.0, "downloads": 29, "unique_downloads": 28, "unique_views": 43, "views": 46 }, "this_version": { "data_volume": 18636531.0, "downloads": 29, "unique_downloads": 28, "unique_views": 43, "views": 46 } }, "status": "published", "updated": "2022-08-17T09:09:33.743958+00:00", "versions": { "index": 1, "is_latest": true } }