31 resultados para 2 epoxy 3 butene
Filtro por publicador
- AMS Campus - Alm@DL - Università di Bologna (1)
- Aquatic Commons (13)
- ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (11)
- Archive of European Integration (18)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (3)
- Argos - Repositorio Institucional de la Secretaría de Investigación y Postgrado de la Facultad de Humanidades y Ciencias Sociales de la Universidad Nacional de Misiones (12)
- Aston University Research Archive (5)
- Biblioteca Digital - Universidad Icesi - Colombia (2)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (8)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (45)
- Biblioteca Digital de la Universidad Católica Argentina (1)
- Biblioteca Valenciana Digital - Ministerio de Educación, Cultura y Deporte - Valencia - Espanha (2)
- Bibloteca do Senado Federal do Brasil (9)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (32)
- Brock University, Canada (14)
- Brunel University (1)
- Bucknell University Digital Commons - Pensilvania - USA (3)
- Bulgarian Digital Mathematics Library at IMI-BAS (1)
- CaltechTHESIS (5)
- Cámara de Comercio de Bogotá, Colombia (4)
- Cambridge University Engineering Department Publications Database (4)
- CentAUR: Central Archive University of Reading - UK (31)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (123)
- Cochin University of Science & Technology (CUSAT), India (2)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (5)
- Deakin Research Online - Australia (11)
- Digital Archives@Colby (1)
- Digital Commons - Montana Tech (3)
- Digital Commons @ Winthrop University (2)
- Digital Commons at Florida International University (1)
- Digital Knowledge Repository of Central Drug Research Institute (4)
- DigitalCommons@The Texas Medical Center (1)
- DigitalCommons@University of Nebraska - Lincoln (2)
- Digitale Sammlungen - Goethe-Universität Frankfurt am Main (15)
- Duke University (1)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (4)
- Escola Superior de Educação de Paula Frassinetti (1)
- Funes: Repositorio digital de documentos en Educación Matemática - Colombia (1)
- Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (17)
- Greenwich Academic Literature Archive - UK (4)
- Harvard University (13)
- Helda - Digital Repository of University of Helsinki (5)
- Indian Institute of Science - Bangalore - Índia (147)
- INSTITUTO DE PESQUISAS ENERGÉTICAS E NUCLEARES (IPEN) - Repositório Digital da Produção Técnico Científica - BibliotecaTerezine Arantes Ferra (20)
- Instituto Politécnico de Leiria (2)
- Instituto Politécnico de Santarém (1)
- Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (1)
- Lume - Repositório Digital da Universidade Federal do Rio Grande do Sul (3)
- Ministerio de Cultura, Spain (11)
- National Center for Biotechnology Information - NCBI (13)
- Publishing Network for Geoscientific & Environmental Data (80)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (50)
- Queensland University of Technology - ePrints Archive (39)
- RCAAP - Repositório Científico de Acesso Aberto de Portugal (2)
- ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (3)
- Repositório Aberto da Universidade Aberta de Portugal (1)
- REPOSITÓRIO ABERTO do Instituto Superior Miguel Torga - Portugal (1)
- Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (1)
- Repositório Científico da Universidade de Évora - Portugal (3)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (2)
- Repositório Científico do Instituto Politécnico de Santarém - Portugal (1)
- Repositório digital da Fundação Getúlio Vargas - FGV (11)
- Repositório Digital da UNIVERSIDADE DA MADEIRA - Portugal (30)
- Repositório Institucional da Universidade de Aveiro - Portugal (2)
- Repositorio Institucional de la Universidad Nacional Agraria (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (39)
- Research Open Access Repository of the University of East London. (1)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
- SAPIENTIA - Universidade do Algarve - Portugal (4)
- School of Medicine, Washington University, United States (1)
- South Carolina State Documents Depository (1)
- Universidad de Alicante (1)
- Universidad del Rosario, Colombia (1)
- Universidad Politécnica de Madrid (1)
- Universidade Complutense de Madrid (2)
- Universidade de Lisboa - Repositório Aberto (2)
- Universidade de Madeira (3)
- Universidade Metodista de São Paulo (5)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (1)
- Université de Lausanne, Switzerland (1)
- Université de Montréal, Canada (2)
- University of Michigan (35)
- University of Queensland eSpace - Australia (6)
- University of Southampton, United Kingdom (2)
- University of Washington (1)
Resumo:
Three new zinc(II)-hexamethylenetetramine (hmt) complexes [Zn-2(4-nbz)(4)(mu(2)-hmt)(OH2)(hmt)] (1). [Zn-2(2-nbz)(4)(mu(2)-hmt)(2)](n) (2) and [Zn-3(3-nbz)(4)(mu(2)-hmt)(mu(2)-OH)(mu(3)-OH)](n) (3) with three isomeric nitrobenzoate, [4-nbz = 4-nitrobenzoate, 2-nbz = 2-nitrobenzoate and 3-nbz = 3-nitrobenzoate] have been synthesized and structurally characterized by X-ray crystallography. Their identities have also been established by elemental analysis: IR, NMR, UV-Vis and mass spectral studies. 1 is a dinuclear complex formed by bridging hmt with mu(2) coordinating mode. The geometry around the Zn centers in 1 is distorted tetrahedral. Paddle-wheel centrosymmetric Zn-2(2-nbz)(4) units of complex 2 are interconnected by mu(2)-hmt forming a one-dimensional chain with square-pyramidal geometries around the Zn centers. Compound 3 contains a mu(2)/mu(3)-hydroxido and mu(2)-hmt bridged 1D chain. In this complex, varied geometries around the Zn centers are observed viz, tetrahedral, square pyramidal and trigonal bipyramidal. Various weak forces, i.e. lone pair-pi, pi-pi and CH-pi interactions, play a key role in stabilizing the observed structures for complexes 1,2 and 3. This series of complexes demonstrates that although the nitro group does not coordinate to the metal center, its presence at the 2-, 3- or 4-position of the phenyl ring has a striking effect on the dimensionality as well as the structure of the resulted coordination polymers, probably due to the participation of the nitro group in 1.p.center dot center dot center dot pi and/or C-H center dot center dot center dot pi interactions.