{"created":"2021-11-11T04:08:09.945522+00:00","id":2001601,"links":{},"metadata":{"_buckets":{"deposit":"ccd0ae5c-4e37-48a4-9f09-eed7d4aad939"},"_deposit":{"created_by":17,"id":"2001601","owner":"17","owners":[17],"owners_ext":{"displayname":"図書情報係","username":"repository"},"pid":{"revision_id":0,"type":"depid","value":"2001601"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:02001601","sets":["320:321:322"]},"author_link":[],"control_number":"2001601","item_1615768549627":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_1629683748249":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2022-03-24","subitem_date_issued_type":"Available"}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-03-24","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicPageEnd":"4358","bibliographicPageStart":"4346","bibliographicVolumeNumber":"143","bibliographic_titles":[{"bibliographic_title":"Journal of the American Chemical Society","bibliographic_titleLang":"en"}]}]},"item_9_description_4":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"A stimuli-responsible reversible structural transformation is of key importance in biological systems. We now report a unique water-mediated reversible transformation among three discrete double-stranded dinuclear titanium(IV) achiral meso- and chiral rac-helicates linked by a mono(μ-oxo) or a bis(μ-hydroxo) bridge between the titanium ions through hydration/dehydration or its combination with a water-mediated dynamic cleavage/re-formation of the titanium-phenoxide (Ti–OPh) bonds. The bis(μ-hydroxo) bridged titanium(IV) meso-helicate prepared from two tetraphenol strands with titanium(IV) oxide was readily dehydrated in CD3CN containing a small amount of water upon heating, accompanied by Ti–OPh bond cleavage/re-formation catalyzed by water, resulting in the formation of the mono(μ-oxo)-bridged rac-helicate, which reverted back to the original bis(μ-hydroxo)-bridged meso-helicate upon hydration in aqueous CD3CN. These reversible transformations between the meso- and rac-helicates were also promoted in the presence of a catalytic amount of an acid, which remarkably accelerated the reactions at lower temperature. Interestingly, in anhydrous CD3CN, the bis(μ-hydroxo)-bridged meso-helicate was further slowly converted to a different helicate, while its meso-helicate framework was maintained, namely the mono(μ-oxo)-bridged meso-helicate, through dehydration upon heating and its meso to meso transformation was significantly accelerated in the presence of cryptand[2.2.1], which contributes to removing Na^+ ions coordinated to the helicate. Upon cooling, the backward meso to meso transformation took place via hydration. Hence, three different, discrete double-stranded chiral rac- and achiral meso-titanium(IV) helicates linked by a mono(μ-oxo) or a bis(μ-hydroxo) bridge were successfully generated in a controllable manner by a change in the water content of the reaction media.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"ACS Publications","subitem_publisher_language":"en"}]},"item_9_relation_43":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1021/jacs.0c13351","subitem_relation_type_select":"DOI"}}]},"item_9_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Journal of the American Chemical Society], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-JCWSWZ62GSAF27WWPNJ5].”","subitem_rights_language":"en"}]},"item_9_source_id_7":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"0002-7863","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ousaka, Naoki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Itakura, Manabu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Nagasaka, Akira","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ito, Masaki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hattori, Tomonari","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Taura, Daisuke","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ikai, Tomoyuki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yashima, Eiji","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-03-24"}],"displaytype":"detail","filename":"Yashima-rev.pdf","filesize":[{"value":"11.9 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/2001601/files/Yashima-rev.pdf"},"version_id":"b6a082bd-6121-4e1c-8d35-96048b6e4edc"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Water-Mediated Reversible Control of Three-State Double-Stranded Titanium(IV) Helicates","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Water-Mediated Reversible Control of Three-State Double-Stranded Titanium(IV) Helicates","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"17","path":["322"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2021-11-11"},"publish_date":"2021-11-11","publish_status":"0","recid":"2001601","relation_version_is_last":true,"title":["Water-Mediated Reversible Control of Three-State Double-Stranded Titanium(IV) Helicates"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-01-16T04:11:02.174257+00:00"}