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Iovkova-Berends L.,Lehrstuhl For Anorganische Chemie Ii Der Technischen University | Seiger M.,Lehrstuhl For Anorganische Chemie Ii Der Technischen University | Westfeld T.,CURRENTA Analytik | Hoffmann A.,Ludwig Maximilians University of Munich | And 2 more authors.
European Journal of Inorganic Chemistry | Year: 2013

We report herein the synthesis of the N-methyl-N′N″- diorganoiminodiacetic acid diamides MeN[CH2C(O)N(R)H]2 [3: R = Me2N(CH2)2; 4: R = PhCH2; 5: R = Me3CCH2] and the novel tin(II) derivatives MeN[CH 2C(O)N(R)]2Sn [6: R = Me2N(CH2) 2; 7: R = PhCH2; 8: R = Me3CCH2]. The compounds were characterized by elemental analyses, 1H NMR spectroscopy (3-5), solid-state 13C and 119Sn NMR spectroscopy (8), and single-crystal X-ray diffraction analysis (5, 8). Compound 8 shows intramolecular N→Sn and intermolecular O→Sn interactions with distances of 2.370(2) and 2.406(2) Å, respectively, the latter indicating that 8 is a coordination polymer. DFT calculations revealed covalent Sn-NC(O) and coordinative N→Sn and C=O→Sn bonds. The wB97Xd functional, which takes into account dispersive interactions, was employed for a correct theoretical description of, in particular, the latter bond. A novel type of intramolecularly coordinated N-heterocyclic diazastannylene is reported that holds great potential for subsequent chemistry due to its high stability in air and the many possibilities to vary the substituents. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Jambor R.,University of Pardubice | Herres-Pawlis S.,Lehrstuhl For Anorganische Chemie Ii Der Technischen University | Schurmann M.,Lehrstuhl For Anorganische Chemie Ii Der Technischen University | Jurkschat K.,Lehrstuhl For Anorganische Chemie Ii Der Technischen University
European Journal of Inorganic Chemistry | Year: 2011

The synthesis of the intramolecularly coordinated pentacarbonyltungsten- organostannylene complexes {2,6-(Me2NCH2) 2C6H3}Sn(H)W(CO)5 (2) and [{2,6-(Me2NCH2)2C6H 3}Sn(u-OH)W(CO)5]2 (3) and the solid-state molecular structure of 3, as determined by single-crystal X-ray diffraction analysis, are reported. Compound 3 is characterized by hydroxido bridges [Sn-O 2.068(5), 2.231(5) Å], an intramolecular NaSn coordination bond [2.501(7) Å] and an intramolecular O-HA···N hydrogen bond [OA···N 2.715(8) Å]. Intramolecular NaSn interactions and O-H···N hydrogen bonds stabilize a dimeric pentacarbonyltungsten-complexed organotin hydroxide. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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