1.

Record Nr.

UNINA9910454282303321

Autore

Costisor Otilia

Titolo

Metal mediated template synthesis of ligands [[electronic resource] /] / Otilia Costisor, Wolfgang Linert

Pubbl/distr/stampa

Singapore ; ; River Edge, NJ, : World Scientific Pub. Co., c2004

ISBN

1-281-93470-4

9786611934705

981-279-481-6

Descrizione fisica

1 online resource (307 p.)

Altri autori (Persone)

LinertW

Disciplina

541.2242

547.05

547/.05

Soggetti

Organometallic compounds - Synthesis

Organic compounds - Synthesis

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record

Nota di bibliografia

Includes bibliographical references (p. 257-294) and index.

Nota di contenuto

Contents               ; Preface              ; The Template Effect                          ; 1.1. Types of Template Effects                                     ; 1.2. The Template Effect as a Molecular Organizer Effect                                                               ; 1.3. Factors Affecting the Product of a Template Reaction                                                                ; 1.3.1. Coordination of ligands                                     ; 1.3.2. The chelate effect                                ; 1.3.3. Macrocyclic effect

1.4. The Negative Template Effect                                        1.5. Advantages of Metal Template Reaction                                                 ; Alkylation Reactions                           ; 2.1. Alkylation of the Nitrogen Atom                                           ; 2.2. Alkylation of the Sulfur Atom                                         ; 2.2.1. Open chain systems                                ; 2.2.2. Macrocyclic ligands                                 ; Schiff Condensation                          ; 3.1. Mechanistic Aspects

3.2. Open-chain Ligands                              3.3. Macrocyclic Ligands                               ; 3.3.1 Diimine macrocycles                                ; 3.3.2. Tetraimine macrocycles                                    ; 3.4. Cage Ligands                        ; 3.5 Compartmental Ligands                                ; 3.5.1. Closed-chain



ligands                                  ; 3.5.2. Open chain ligands                                ; Mannich Condensation                           ; 4.1. Mechanistic Aspects

4.2 Acyclic Ligands                          4.2.1. Polyamine ligands                               ; 4.2.2. NO donor ligands                              ; 4.2.3. SN donor ligands                              ; 4.3. Monocyclic Ligands                              ; 4.3.1. Tetraaza macrocycles                                  ; 4.3.2. Pentaaza macrocycles                                  ; 4.3.3. Hexaaza macrocycles                                 ; 4.3.4. Octaaza macrocycles                                 ; 4.3.5. Azaether macrocycle

4.3.6. Azathioether macrocycle                                     4.3.7. Reinforced macrocycles                                    ; 4.3.8. Macromonocyclic dicompartmental ligands                                                     ; 4.4. Isolated Dimacrocycles                                  ; 4.5.Condensed Polymacrocyclic Ligands                                            ; 4.5.1. Carbon and nitrogen caped amine ligands                                                     ; 4.5.2. P- As amine cage ligands

4.5.3. Thioamine cage ligands

Sommario/riassunto

This book surveys the relatively new area of the synthesis of organic ligands when metal ions act as a template. In the last fifty years this field has undergone an explosive development, marked by a great amount of literature. The material in the book has been arranged according to the type of chemical reaction involved. In this frame, the basic principles of metal template reactions and the shape of the molecules are considered. Designed to satisfy the demands of students, young researchers doing their PhDs, and those working in the field of coordination chemistry, the book details the role



2.

Record Nr.

UNINA9910736015803321

Titolo

Hemorrhoids [[electronic resource] /] / edited by Carlo Ratto, Angelo Parello, Francesco Litta

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Springer, , 2020

Descrizione fisica

1 online resource (Approx. 370 p.)

Collana

Coloproctology, , 2511-817X

Disciplina

617.555

Soggetti

Rectum—Surgery 

Proctology

Surgery

Colorectal Surgery

General Surgery

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Sommario/riassunto

This book offers a comprehensive guide to hemorrhoidal disease, the most frequent coloproctological affection. In addition to amply illustrated chapters covering the epidemiology and anatomic, physiologic, and pathophysiologic bases of hemorrhoids, readers will find helpful information on the classification of hemorrhoidal disease and modalities to assess it, as well as their significant impact on the choice of treatment. The work presents a complete panel of all therapies usually adopted to treat this condition and their outcomes, which are critically commented on by prominent specialists. Further, management of the disease in special conditions is also discussed. Lastly, a literature review and evaluation of the impact of different treatments on the patient’s quality of life round out the volume, which is part of the Reference Work series entitled Coloproctology.