New Stannandiamines Comprising Photoactive Fragments

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Abstract

The reactions of dibutyltin dichloride with potassium amides KNH-pap, KNH-4pbt, and KNH-2pbt (pap = 4-(phenylazo)phenyl; 4pbt = 1,3-benzothiazol-2-yl-4-phenyl; 2pbt = 1,3-benzothiazol-2-yl-2-phenyl) were studied. It was found that in the case of KNH-pap and KNH-4pbt, the only products formed were stannanediamines nBu2Sn(NH-pap)2 (I) and nBu2Sn(NH-4pbt)2 (II). However, in the case of KNH-2pbt, an inseparable mixture of stannanediamine nBu2Sn(NH-2pbt)2 ( III) and cyclodistannadiazane [nBu2Sn(N-2pbt)]2 (IV) was obtained. The molecular structures of compounds I–IV were determined by single-crystal X-ray diffraction (SCXRD) analysis of the crystalline phases I · 0.5C7H8, II · 0.5THF, III, and IV (CCDC No 2367378 (I · 0.5C7H8), 2367379 (II · 0.5THF), 2367380 (III), and 2367378 (IV)).

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About the authors

A. G. Demkin

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Email: konch@niic.nsc.ru
Russian Federation, Novosibirsk

E. P. Latushko

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University

Email: konch@niic.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk

B. Yu. Savkov

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Email: konch@niic.nsc.ru
Russian Federation, Novosibirsk

T. S. Sukhikh

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Email: konch@niic.nsc.ru
Russian Federation, Novosibirsk

S. N. Konchenko

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: konch@niic.nsc.ru
Russian Federation, Novosibirsk

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Supplementary files

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3. Fig. 1. Structure of the molecule of compound I in phase I · 0.5C₇H₈. Hydrogen atoms are shown only for amino groups. The second positions of disordered fragments are shown by a dotted line.

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4. Fig. 2. Structure of molecules of compound II in phase II · 0.5 THF: A — molecule in contact with THF; B — molecules not in contact with THF. Hydrogen atoms are shown only for amino groups.

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5. Fig. 3. Structure of the molecule of compound III. The red arrow shows the axis of symmetry C₂. Hydrogen atoms are shown only for amino groups.

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6. Fig. 4. Structure of one of two independent molecules of compound IV. Hydrogen atoms are not shown.

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7. Scheme 1. Examples of bidentate N,N`-donor ligands NEN, from left to right: amidinates and guanidinates (NCN), triazenides (NNN), iminophosphonamidinates (NPN), silanediamides (NSiN).

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8. Scheme 2. Photoactive fragments used in this work.

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9. Scheme 3. Synthesis of compounds I and II.

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10. Scheme 4. Reaction of ⁿBu₂SnCl₂ with K(NH-²pbt) and possible routes to the formation of compound III.

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