Reaktion von DioxomoIybdän(VI)-Komplexen mit O-Methyl-thiocarbazat Darstellung und Charakterisierung von Schiffbase-, Hydrazido- und Diazenido-Komplexen des Molybdäns / Reaction of Dioxomolybdenum(VI) Complexes with O-Methylthiocarbazate Synthesis and Characterization of Schiffbase, Hydrazido and Diazenido Complexes of Molybdenum

1987 ◽  
Vol 42 (5) ◽  
pp. 599-604 ◽  
Author(s):  
Rainer Mattes ◽  
Heinz Scholand ◽  
Ulrich Mikloweit ◽  
Volker Schrenk
Keyword(s):  
Vibrational Spectroscopy ◽  
Mirror Symmetry ◽  
The Other ◽  
Dinuclear Complex ◽  
Synthesis And Characterization ◽  
Donor Ligand ◽  
Metal Atoms ◽  
Dimeric Complexes ◽  
Trigonal Prismatic

transThe reaction of NH2NHC(S)OR, (R = Me, Et) with MoO2(acac)2 yields the dimeric complexes MO2O3(MeC(O)CHC(Me)NNC(S)0R)2 (1) with the planar O = Mo - O - Mo = O group. The tetradentate O,N,S-donor ligand is formed through condensation of acetylacetone with the organohydrazine. The reactions of NH2NHC(S)OMe with MoO2(S2CNEt2)2 and MoO2(ONEt2)2 give the diazenido hydrazido complexes Mo(NNC(S)OMe)(NH2NC(S)OMe)(S2CNEt2)2·CH2Cl2(2) and Mo(NNC(S)OMe)(NH2NC(S)OMe)2(ONEt2) (4). The metal atoms in both compounds are seven coordinated and contain the approximately linear diazenido ligand NNC(S)OMe and one (2) or two (4) N,S-chelating hydrazido(1-) ligands NH2NC(S)OMe. 2 has crystallographically imposed mirror symmetry. Recrystallization of 2 from toluene in air gives the asymmetric dinuclear complex (Et2NCS2)(O)Mo(μ-NNC(S)OMe)2Mo(S2CNMe2) (3). The Mo-Mo distance is 267.0(2) pm. One Mo site has square pyramidal MoOS2N2 geometry, the other trigonal prismatic MoN2S4 geometry. The coordination of the bridging N atoms is slightly pyramidal. The compounds 1, 2 and 3 have been further characterized by vibrational spectroscopy.

Synthesis and characterization of two stable paramagnetic octahedral chromium(IV) complexes with dianionic tridentate SNO donor ligands and of a chromium(III) complex with a ONO donor ligand

2008 ◽  
Vol 361 (5) ◽  
pp. 1485-1495 ◽  
Author(s):  
Manjuri K. Koley ◽  
Seshadri C. Sivasubramanian ◽  
Babu Varghese ◽  
Periakaruppan T. Manoharan ◽  
Aditya P. Koley
Keyword(s):  
Donor Ligands ◽  
Synthesis And Characterization ◽  
Donor Ligand

Synthesis and Characterization of Heterometallic Iron–Uranium Complexes with a Bidentate N-Donor Ligand (2,2′-Bipyridine or 1,10-Phenanthroline)

2018 ◽  
Vol 57 (21) ◽  
pp. 13318-13329 ◽  
Author(s):  
Sebastian Schöne ◽  
Thomas Radoske ◽  
Juliane März ◽  
Thorsten Stumpf ◽  
Atsushi Ikeda-Ohno
Keyword(s):  
Synthesis And Characterization ◽  
Donor Ligand ◽  
Uranium Complexes

Structure and Stereochemistry of Adducts of Tris(dipivaloylmethanato)europium(III), Eu(dpm)3, with Some Dipolar Aprotic Unidentate O-Donors

2020 ◽  
Vol 73 (6) ◽  
pp. 455
Author(s):  
Eric J. Chan ◽  
Jack M. Harrowfield ◽  
Brian W. Skelton ◽  
Alexandre N. Sobolev ◽  
Allan H. White
Keyword(s):  
Single Crystal ◽  
Dimethyl Sulfoxide ◽  
The Other ◽  
Asymmetric Unit ◽  
X Ray ◽  
Metal Atoms ◽  
Oxygen Donor ◽  
Trigonal Prismatic

Single crystal X-ray structural characterisations are reported for adducts of the form [(L-O)Eu(O,O′-dpm)3] obtained by the crystallisation of tris(dipivaloylmethanato)europium(iii) (dpm=[HC(C(tBu).CO)2]−) from an array of dipolar aprotic oxygen-donor solvents L (L=N-methylpyrrolidinone (nmp), trimethylphosphate, (MeO)3PO, (tmp), hexamethylphosphoramide (hmpa), dimethylacetamide (dma), dimethyl sulfoxide (dmso), and the bidentate octamethylpyrophosphoramide (ompa). In all adducts, the resulting arrays contain seven-coordinate metal atoms, which adopt two different isomeric forms of the mono-capped trigonal prismatic stereochemistry, the L=dma and dmso adducts corresponding to one type, nmp and tmp the other. The adduct formed with ompa behaves as a pair of discrete metal environments bridged by the O-ompa-O′ ligand, thus; [(dpm-O,O′)3Eu(O-ompa-O′)Eu(O,O′-dpm)3], and is found in two forms, one in which both Eu environments is of the tmp type, the other of the dmso/dma type. In the hmpa adduct, the asymmetric unit of the structure is a disordered composite of both types. In none of the adducts is there any further solvation beyond coordination of a single L.

Synthesis and Characterization of a New Copper(II) Complex with Nadolol, an Aminoalcoholic Beta-blocker. Crystal Structure of Na[Cu(nadololate)(CO3)] · H2O

2008 ◽  
Vol 63 (5) ◽  
pp. 543-547 ◽  
Author(s):  
Inés Viera ◽  
Laura Domínguez ◽  
Javier Ellena ◽  
María H. Torre
Keyword(s):  
Crystal Structure ◽  
Vibrational Spectroscopy ◽  
Copper Complex ◽  
Beta Blocker ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Spectroscopy Analysis ◽  
X Ray

This work reports the synthesis and characterization of a new copper complex with nadolol, a betablocker aminoalcohol. The stoichiometry found was Na[Cu(nadololate)(CO3)] · H2O. Electronic and vibrational spectroscopy analysis was performed, and the crystal structure of Na[Cu(nadololate)-(CO3)] · H2O was determined by X-ray diffraction.

The Synthesis and Characterization of Nitrooxy- and Nitrosooxyborazine Compounds

2014 ◽  
Vol 69 (11-12) ◽  
pp. 1241-1247
Author(s):  
Thomas M. Klapötke ◽  
Magdalena Rusan
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Vibrational Spectroscopy ◽  
Elemental Analysis ◽  
Experimental Results ◽  
Synthesis And Characterization ◽  
The Impact

Abstract B-Nitrosooxypentamethylborazine, B-nitrooxypentamethylborazine and B-trinitrooxy-N-trimethylborazine have been synthesized and characterized by 1H, 13C, 11B, and 14N NMR spectroscopy, mass spectrometry, vibrational spectroscopy and elemental analysis. The 11B NMR shifts were calculated and compared to the experimental results. The decomposition temperatures and the impact and friction sensitivities of these compounds have been determined as well.

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