Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/3709
DC FieldValueLanguage
dc.contributor.authorA., Bencinien_us
dc.contributor.authorA., Bianchien_us
dc.contributor.authorE., Garciaespanaen_us
dc.contributor.authorM., Giustien_us
dc.contributor.authorMangani, Stefanoen_us
dc.contributor.authorM., Michelonien_us
dc.contributor.authorP., Oriolien_us
dc.contributor.authorP., Paolettien_us
dc.date.accessioned2021-03-30T14:35:23Z-
dc.date.available2021-03-30T14:35:23Z-
dc.date.issued1987-
dc.identifier.issn0020-1669en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12779/3709-
dc.description48013en_US
dc.description.abstractThe synthesis and characterization of the large am macrocycle 1,4,7,10,13,16,19,22,25,28-decaamcyclotriaconta(Lne) ([30]aneNlo) are described. Crystals of the com ound [CU~(L)HCI~](CIO~a)re~ m-o~nHoc~liOni c, space group P2/n, with a = 21.491 (5) A, b = 7.696 (4) A, c = 12.210 (4) 1,le = 103.04 (5)O, and 2 = 2. Refinement of the atomic parameters by least-squares methods gave a final R factor of 0.097 (R, = 0.097) for 1298 unique reflections with I > 3 4 ) . The structure consists of binuclear [Cu2(L)HCl2I3' cations and perchlorate anions; each half of the macrocycle is symmetry related by a twofold axis passing through its center. The cop r atoms (CuCu distance 7.26 (1) A) are coordinated by four nitrogen atoms of the macrocycle ligand (average Cu-N = 2.03 (2) 6 and one chloride ion (CuCI = 2.43 (1) A) in a square-pyramidal geometry. One of the two uncoordinated nitrogen atoms is protonated. The basicity constants of the macrocycle and the stability constants of the copper(I1) complexes were determined by potentiometry at 25 OC in 0.15 mol dm-3 NaC104 The formation enthalpy of the species [Cu2(L)I4' was determined by batch microcalorimetry. Only binuclear species are formed; the stability of the binuclear [Cu2(L)I4' species is high (log K = 37.77), and its formation is largely exothermic (AHo = -45.5 kcal mol-'). The thermodynamic quantities AGO and AHo as well as the electronic spectral features of the [Cu2(L)I4' species indicate that all nitrogen atoms are coordinated to the copper(I1) atoms. The [CU,(L)]~' macrocycle shows a great tendency to form protonateen_US
dc.language.isoenen_US
dc.relationNoneen_US
dc.relation.ispartofINORGANIC CHEMISTRYen_US
dc.subjectx-ray; crystal macrocycle; copperen_US
dc.titleSynthesis and Complexing Properties of the Large Polyazacycloalkane 1,4,7,10,13,16,19,22,25,28-decaazacyclotriacontane (l) - Crystal-structure of the Monoprotonated Dicopper(ii) Complex [cu2(l)hcl2](clo4)3.4h2oen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/ic00255a013en_US
dc.identifier.scopus2-s2.0-0000760098en_US
dc.identifier.isiWOS:A1987H042900013en_US
dc.relation.volume26en_US
dc.description.firstpage1243en_US
dc.description.lastpage1247en_US
dc.description.thirdmissionNot applicableen_US
item.cerifentitytypePublications-
item.grantfulltextnone-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeArticle-
item.fulltextNo Fulltext-
crisitem.author.orcid0000-0003-4824-7478-
Appears in Collections:Publications
Show simple item record

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.