{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T06:50:54Z","timestamp":1762930254233,"version":"3.45.0"},"reference-count":66,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2025,2,11]],"date-time":"2025-02-11T00:00:00Z","timestamp":1739232000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["aces.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry \u0097 An Asian Journal"],"published-print":{"date-parts":[[2025,4,17]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Reaction of the BDPAA (N,N\u2010dimethyl pyridine\u2010based tri(carboxamide)) with iron tetrafluoroborate, cobalt chloride and nickel triflate separately in methanol\/acetonitrile affords the complex, [Fe(BDPAA)\n                    <jats:bold>(<\/jats:bold>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    O)](BF\n                    <jats:sub>4<\/jats:sub>\n                    )\n                    <jats:sub>2<\/jats:sub>\n                    , [Co(BDPAA)\n                    <jats:bold>(<\/jats:bold>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    O)]Cl\n                    <jats:sub>2<\/jats:sub>\n                    and [Ni(BDPAA)(H\n                    <jats:sub>2<\/jats:sub>\n                    O)](CF\n                    <jats:sub>3<\/jats:sub>\n                    SO\n                    <jats:sub>3<\/jats:sub>\n                    )\n                    <jats:sub>2<\/jats:sub>\n                    , respectively. The solid\u2010state structural analysis of cobalt and nickel complexes of bis\u2010dipicolinamideacetamide (BDPAA) ligand and the solution state paraCEST studies of all three complexes are presented. Among these complexes, only Co(II)\u2010BDPAA complex exhibits remarkable paraCEST activity due to exchangeable carboxamide NH\n                    <jats:sub>2<\/jats:sub>\n                    protons, whereas the corresponding Fe complex shows very little CEST effect and Ni complex did not show CEST activity at all. Single crystal X\u2010ray analysis of [Co(BDPAA)\n                    <jats:bold>(<\/jats:bold>\n                    H\n                    <jats:sub>2<\/jats:sub>\n                    O)]Cl\n                    <jats:sub>2<\/jats:sub>\n                    indicates that the Co(II) ion exhibits a seven\u2010coordination with N\n                    <jats:sub>3<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    from the ligand and one inner sphere water molecule, leading to a distorted pentagonal bipyramidal (pbp) geometry. Presaturation of the picolinamide protons of the Co complex, 73\u2005ppm distant from the bulk water signal by 25 \u03bcT pulse at 37\u2009\u00b0C leads to an 18\u2009% decrease in intensity of\n                    <jats:sup>1<\/jats:sup>\n                    H NMR signals due to CEST effect. The Co\u2010BDPAA complex shows the best CEST effect at pH around 7.4\u20107.6. The measured proton exchange rate constant (k\n                    <jats:sub>ex<\/jats:sub>\n                    ) values for the CEST peaks at 20 and 73\u2005ppm were approximately 3.66\u00d710\n                    <jats:sup>3<\/jats:sup>\n                    \u2005s\n                    <jats:sup>\u22121<\/jats:sup>\n                    and 3.74\u00d710\n                    <jats:sup>3<\/jats:sup>\n                    \u2005s\n                    <jats:sup>\u22121<\/jats:sup>\n                    , respectively.\n                  <\/jats:p>","DOI":"10.1002\/asia.202401405","type":"journal-article","created":{"date-parts":[[2025,2,1]],"date-time":"2025-02-01T07:13:36Z","timestamp":1738394016000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Remarkable ParaCEST Activity Shown by a Co(II) Complex of Bis\u2010Dipicolinamideacetamide With One Inner Sphere Water Molecule"],"prefix":"10.1002","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5159-3663","authenticated-orcid":false,"given":"Soumyadarshi","family":"Rath","sequence":"first","affiliation":[{"name":"School of Basic Sciences Indian Institute of Technology Bhubaneswar  Bhubaneswar 752050 India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8854-3058","authenticated-orcid":false,"given":"Suvam","family":"Kumar Panda","sequence":"additional","affiliation":[{"name":"School of Basic Sciences Indian Institute of Technology Bhubaneswar  Bhubaneswar 752050 India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anupriya","family":"Chattapadhya","sequence":"additional","affiliation":[{"name":"National Institute of Science Education and Research Bhubaneswar School of Biological Sciences, P.O. Jatni  Khurda 752050 Odisha India"},{"name":"Homi Bhabha National Institute Training School Complex, Anushakti Nagar  Mumbai 400094 India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chandan","family":"Goswami","sequence":"additional","affiliation":[{"name":"National Institute of Science Education and Research Bhubaneswar School of Biological Sciences, P.O. Jatni  Khurda 752050 Odisha India"},{"name":"Homi Bhabha National Institute Training School Complex, Anushakti Nagar  Mumbai 400094 India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7739-3821","authenticated-orcid":false,"given":"Akhilesh","family":"Kumar Singh","sequence":"additional","affiliation":[{"name":"School of Basic Sciences Indian Institute of Technology Bhubaneswar  Bhubaneswar 752050 India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,2,11]]},"reference":[{"key":"e_1_2_9_1_1","doi-asserted-by":"publisher","DOI":"10.1097\/00000446-200212000-00012"},{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/00002142-199500730-00002"},{"key":"e_1_2_9_3_1","unstructured":"\u00a0"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.8b00363"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1039\/b510982p"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00775-013-1074-5"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr980440x"},{"key":"e_1_2_9_8_2","doi-asserted-by":"crossref","unstructured":"\u00e9. 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