We report the first successful attachment of peptides to tin sulfide clusters. For proof of principle, H-L-Phe hydrazide and Boc-protected dipeptide hydrazides (Boc-L-Ala-L-Ala hydrazide and Boc-L-Val-L-Phe hydrazide) were reacted with keto-functionalized tin sulfide clusters [(R 1 Sn) 4 S 6 ] (A; R 1 = CMe 2 CH 2 C(O)Me) and [(R 1 Sn) 3 S 4 Cl] (B). In the first case, we obtained single crystals of an amino acid functionalized Sn/S cluster, [R 2 2 Sn 4 S 5 ] (1; R 2 = (CMe 2 CH 2 C(Me)-N 2 C(O)CH(CH 2 Ph)NC(Me)CH 2 CMe 2 ), formed after inorganic cluster rearrangement and intramolecular condensation of the amino acid ligand. By means of NMR spectroscopic investigations and ESI/LIFDI mass spectrometry, we demonstrate that both dipeptides are attached to B under retention of the original cluster architecture to yield [(R 3 Sn) 3 S 4 Cl] (2; R 3 = CMe 2 CH 2 C(NNH-Ala-Ala-Boc)Me) and [(R 4 Sn) 3 S 4 Cl] (3; R 4 = CMe 2 CH 2 C(NNH-Phe-Val-Boc)Me), as evident from mass spectrometric data of their cations [(R 3 Sn) 3 S 4 ] + (2 + ) and [(R 4 Sn) 3 S 4 ] + (3 + ).
Herein we present the synthesis and characterisation of the seven-membered group 13/15 chain compound HB{N(H)PtBu2BH3}2 (3) obtained from the reaction of tBu2PNH2 (1) with Me2S·BH3. Furthermore, we describe the synthesis of the aluminium and gallium compounds tBu2PN(H)AltBu2N(H)P(H)tBu2 (4) and tBu2(H)PN(H)GatBu3 (5) derived from the reaction of tBu2PNH2 (1) with MtBu3 (M = Al, Ga).
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