@article{58571, author = {{Dogan, Deniz and Ruthmann, Simon and Seewald, Oliver and Bremser, Wolfgang}}, issn = {{0300-9440}}, journal = {{Progress in Organic Coatings}}, publisher = {{Elsevier BV}}, title = {{{Tuning of antifouling active PDMS domains tethered to epoxy/amine surface}}}, doi = {{10.1016/j.porgcoat.2022.106977}}, volume = {{170}}, year = {{2022}}, } @article{58570, author = {{Ressel, Joerg and Seewald, Oliver and Bremser, Wolfgang and Reicher, Hans-Peter and Strube, Oliver I.}}, issn = {{0300-9440}}, journal = {{Progress in Organic Coatings}}, publisher = {{Elsevier BV}}, title = {{{Self-lubricating coatings via PDMS micro-gel dispersions}}}, doi = {{10.1016/j.porgcoat.2020.105705}}, volume = {{146}}, year = {{2020}}, } @article{58588, author = {{Ressel, Joerg and Seewald, Oliver and Bremser, Wolfgang and Reicher, Hans-Peter and Strube, Oliver I.}}, issn = {{0300-9440}}, journal = {{Progress in Organic Coatings}}, pages = {{1--7}}, publisher = {{Elsevier BV}}, title = {{{Low friction poly(amide-imide) coatings with silicones as tethered liquids}}}, doi = {{10.1016/j.porgcoat.2018.07.029}}, volume = {{124}}, year = {{2018}}, } @article{58590, abstract = {{AbstractSynthesis and characterisation of a disubstituted phenanthroline, “dbt‐phen” (“dbt‐phen”, 2,9‐di(benzothiazolino)‐1,10‐phenanthroline) 1 and its CuI, CuII, NiII, ZnII and FeII complexes are reported. Three different coordination modes of the ligand viz., bis(didentate), tridentate and tetradentate are observed. Under various experimental conditions, 1 forms a double‐stranded dicopper(I)helicate, [CuI2(dbt‐phen)2]2+ 2; a mono(dbt‐phen) copper(II) complex, [CuII(dbt‐phen)(H2O)2]2+ 3, a NiII complex [Ni(dbt‐ phen)(NCMe)2(OH2)]2+ 4, a bis(dbt‐phen) zinc(II) complex, [ZnII(dbt‐phen)2]2+ 5 and a pseudo‐octahedral complex [FeII(dbt‐phen)Br2] 6. Crystal packing feature of the dicopper helicate [CuI(dbt‐phen)]2[BF4]2, 2+[BF4]2 reveals novel short contacts between BF4− ions and the hydrogens of the phenyl rings leading to the peculiar double stranded and helical topology. The complex [CuII(dbt‐phen)(OH2)2(ClO4)][ClO4], 3+[ClO4] exhibits both intra‐ and inter‐molecular H‐bonding interactions. 1H NMR spectral features of the ligand, copper(I) and zinc(II) complexes indicate that the free ligand and the copper(I) complex retain their solid state structures whereas the zinc(II) complex undergoes structural changes in solution.}}, author = {{Begum, Ameerunisha and Seewald, Oliver and Flörke, Ulrich and Henkel, Gerald}}, issn = {{2365-6549}}, journal = {{ChemistrySelect}}, number = {{10}}, pages = {{2257--2264}}, publisher = {{Wiley}}, title = {{{Structural and NMR Spectroscopic Investigations of CuI, CuII, NiII, ZnII and FeII Complexes of 2, 9‐Di‐(Benzothiazolino)‐1,10‐Phenanthroline}}}, doi = {{10.1002/slct.201600505}}, volume = {{1}}, year = {{2016}}, } @article{58593, abstract = {{AbstractThe transition metal complexes with the ligand 1,3‐bis(N,N,N′,N′‐tetramethylguanidino)propane (btmgp), [Mn(btmgp)Br2] (1), [Co(btmgp)Cl2] (2), [Ni(btmgp)I2] (3), [Zn(btmgp)Cl2] (4), [Zn(btmgp)(O2CCH3)2] (5), [Cd(btmgp)Cl2] (6), [Hg(btmgp)Cl2] (7) and [Ag2(btmgp)2][ClO4]2·2MeCN (8), were prepared and characterised for the first time. The stoichiometric reaction of the corresponding water‐free metal salts with the ligand btmgp in dry MeCN or THF resulted in the straightforward formation of the mononuclear complexes 1–7 and the binuclear complex 8. In complexes with MII the metal ion shows a distorted tetrahedral coordination whereas in 8, the coordination of the MI ion is almost linear. The coordination behavior of btmgp and resulting structural parameters of the corresponding complexes were discussed in an comparative approach together with already described complexes of btmgp and the bisguanidine ligand N1,N2‐bis(1,3‐dimethylimidazolidin‐2‐ylidene)‐ethane‐1,2‐diamine (DMEG2e), respectively.}}, author = {{Neuba, Adam and Herres‐Pawlis, Sonja and Seewald, Oliver and Börner, Janna and Heuwing, Andreas J. and Flörke, Ulrich and Henkel, Gerald}}, issn = {{0044-2313}}, journal = {{Zeitschrift für anorganische und allgemeine Chemie}}, number = {{15}}, pages = {{2641--2649}}, publisher = {{Wiley}}, title = {{{Systematische Studie zu den Koordinationseigenschaften des Guanidin‐Liganden Bis(tetramethylguanidino)propan mit den Metallen Mangan, Cobalt, Nickel, Zink, Cadmium, Quecksilber und Silber}}}, doi = {{10.1002/zaac.201000133}}, volume = {{636}}, year = {{2010}}, } @article{58594, author = {{Ameerunisha Begum, M.S. and Seewald, Oliver and Flörke, Ulrich and Henkel, Gerald}}, issn = {{0020-1693}}, journal = {{Inorganica Chimica Acta}}, number = {{7}}, pages = {{1868--1874}}, publisher = {{Elsevier BV}}, title = {{{From the {Cu(μ2-S)N}4 butterfly architecture to the {Cu(μ3-S)N}12 double wheel}}}, doi = {{10.1016/j.ica.2007.09.047}}, volume = {{361}}, year = {{2008}}, } @article{58591, author = {{Neuba, Adam and Seewald, Oliver and Flörke, Ulrich and Henkel, Gerald}}, issn = {{1600-5368}}, journal = {{Acta Crystallographica Section E Structure Reports Online}}, number = {{8}}, pages = {{m2099--m2100}}, publisher = {{International Union of Crystallography (IUCr)}}, title = {{{Di-μ-oxido-bis{[1,3-bis(tetramethylguanidino)propane-κ2N,N′]bromidomanganese(III)}}}}, doi = {{10.1107/s1600536807032801}}, volume = {{63}}, year = {{2007}}, } @article{58598, abstract = {{AbstractA series of bis‐guanidine ligands designed for use in biomimetic coordination chemistry has been extended to a library matrix combining unprecedented substitutional flexibility within the guanidyl residues with a wide range of aliphatic and aromatic spacers connecting these functionalities. The underlying protocol can be used with predefined ureas as well as secondary amines to build up these units by reaction with phosgene if the ureas are otherwise unavailable. In the latter case, the resulting urea intermediates do not have to be isolated as the reaction proceeds further with additional phosgene to yield a chloroformamidinium chloride which is transformed into the bis‐guanidine functionality by subsequent reaction with a suitable primary diamine in the presence of triethylamine as an auxiliary base. This concept has been used to synthesise and characterise more then two dozen different bis‐guanidines based on 12 discrete monoguanidine units and seven different spacers. These spacers have been chosen such that the most important phenotypes have been dealt with and which range from rigid to more flexible scaffolds. In addition to spacers with no metal‐binding capabilities, other species containing further donor functions such as N‐methyldiphenyleneamine or pyridine‐2,6‐diyl have also been used. The substitution patterns of the guanidine residues can be classified into acyclic and cyclic types. Among the cyclic types, one subset is characterised by five‐ or six‐membered heterocycles containing both the amino nitrogen atoms and another one by individual N‐heterocyclic systems for each amino nitrogen. Structurally characterised examples are 2‐{2‐[2‐(tetramethylguanidi­no)ethoxy]ethoxy}‐1‐(tetramethylguanidino)ethane (TMG2doo) in its diprotonated form and 2,2′‐bis[2N‐(1,1′,3,3′‐tetramethylguanidine)]diphenyleneamine (TMG2PA) as wellas N1,N3‐bis(dimorpholinomethylene)propane‐1,3‐diamine (DMorphG2p) as free bases. For the permethylated bis‐guanidine derivatives, the barrier to rotation around the (C=N)guanidine bond has been determined by means of temperature‐dependent EXSY 1H NMR spectroscopy to range between 54 and 79 kJ mol–1 depending on the type of spacer. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)}}, author = {{Herres‐Pawlis, Sonja and Neuba, Adam and Seewald, Oliver and Seshadri, Tarimala and Egold, Hans and Flörke, Ulrich and Henkel, Gerald}}, issn = {{1434-193X}}, journal = {{European Journal of Organic Chemistry}}, number = {{22}}, pages = {{4879--4890}}, publisher = {{Wiley}}, title = {{{A Library of Peralkylated Bis‐guanidine Ligands for Use in Biomimetic Coordination Chemistry}}}, doi = {{10.1002/ejoc.200500340}}, volume = {{2005}}, year = {{2005}}, } @article{58597, abstract = {{AbstractSyntheses and Structure of Chiral Metallatetrahedron Complexes of the Type [Re2(M1PPh3)(M2PPh3)(μ‐PCy2)(CO)7C≡CPh] (M1 = Ag, Au; M2 = Cu, Ag, Au)From the reaction of Li[Re2(μ‐H)(μ‐PCy2)(CO)7(C(Ph)O)] (1) with Ph3AuC≡CPh both benzaldehyde and the trinuclear complex Li[Re2(AuPPh3)(μ‐PCy2)(CO)7C≡CPh] (2a) were obtained in high yield. The complex anion was isolated as its PPh4‐salt 2b. The latter reacts with coinage metal complexes PPh3M2Cl [M2 = Cu, Ag, Au] to give chiral heterometallatetrahedranes of the general formula [Re2(AuPPh3)(M2PPh3)(μ‐PCy2)(CO)7C≡CPh] (M2 = Cu 3a, Ag 3b, Au 3c). The corresponding complex [Re2(AgPPh3)2(μ‐PCy2)(CO)7C≡CPh] (3d) is obtained from the reaction of [Re2(AgPPh3)2(μ‐PCy2)(CO)7Cl] (4) with LiC≡CPh. 3d undergoes a metathesis reaction in the presence of PPh3CuCl giving [Re2(AgPPh3)(CuPPh3)(μ‐PCy2)(CO)7C≡CPh] (3e) and PPh3AgCl. Analogous metathesis reactions are observed when 3c is reacted with PPh3AgCl or PPh3CuCl giving 3a or 3b, respectively. The reaction of 1 with PPh3AuCl gives benzaldehyde and Li[Re2(AuPPh3)(μ‐PCy2)(CO)7Cl] (5a) which upon reaction with PhLi forms the trinuclear complex Li[Re2(AuPPh3)(μ‐PCy2)(CO)7Ph] (6a). Again this complex was isolated as its PPh4‐salt 6b. In contrast to 2b, 6b reacts with one equivalent of Ph3PAuCl by transmetalation to give Ph3PAuPh and PPh4[Re2(AuPPh3)(μ‐PCy2)(CO)7Cl] (5b). The X‐ray structures of the compounds 3a, 3b, 3e and 4 are reported.}}, author = {{Seewald, Oliver and Flörke, Ulrich and Egold, Hans and Haupt, Hans‐Jürgen and Schwefer, Meinhard}}, issn = {{0044-2313}}, journal = {{Zeitschrift für anorganische und allgemeine Chemie}}, number = {{2}}, pages = {{204--210}}, publisher = {{Wiley}}, title = {{{Synthese und Struktur chiraler Heterometallatetrahedrane des Typs [Re2(M1PPh3)(M2PPh3)(μ‐PCy2)(CO)7C≡CPh] (M1 = Ag, Au; M2 = Cu, Ag, Au)}}}, doi = {{10.1002/zaac.200500340}}, volume = {{632}}, year = {{2005}}, } @article{58603, author = {{Haupt, Hans-Jürgen and Seewald, Oliver and Flörke, Ulrich and Buß, Volker and Weyhermüller, Thomas}}, issn = {{1472-7773}}, journal = {{Journal of the Chemical Society, Dalton Transactions}}, number = {{22}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Diastereomeric metallatetrahedron complexes of the type Re2(MPPh3)(M′PPh3)(µ-PCy2)(CO)7(–)-thiocamphanate (M = Ag, Au, M′ = Cu, Ag, Au): synthesis, structure and CD data}}}, doi = {{10.1039/b104999m}}, year = {{2003}}, } @article{58604, author = {{Haupt, Hans-Jürgen and Seewald, Oliver and Flörke, Ulrich and Buß, Volker and Weyhermüller, Thomas}}, issn = {{1470-479X}}, journal = {{Journal of the Chemical Society, Dalton Transactions}}, number = {{16}}, pages = {{2837--2843}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Diastereomeric metallatetrahedron complexes of the type Re2(AgPR3)2(μ-PCy2)(CO)7Z (R = Et and Ph; Z = (−)- and (+)-camphanate): synthesis, structure and CD data}}}, doi = {{10.1039/b003013i}}, year = {{2002}}, }