Kulcsar Monika, Beleaga Anca, Silvestru Cristian, Nicolescu Alina, Deleanu Calin, Todasca Cristina, Silvestru Anca
Faculty of Chemistry and Chemical Engineering, "Babes-Bolyai" University, RO-400028, Cluj-Napoca, Romania.
Dalton Trans. 2007 Jun 7(21):2187-96. doi: 10.1039/b702629c. Epub 2007 Apr 23.
Cleavage of the Se-Se bond in 2-{O(CH(2)CH(2))(2)NCH(2)}C(6)H(4)Se(2) (1) and 2-{MeN(CH(2)CH(2))(2)NCH(2)}C(6)H(4)Se(2) (2) by treatment with SO(2)Cl(2), bromine or iodine (1 : 1 molar ratio) yielded [2-{O(CH(2)CH(2))(2)NCH(2)}C(6)H(4)]SeX [X = Cl (3), Br (4), I (5)] and [2-{MeN(CH(2)CH(2))(2)NCH(2)}C(6)H(4)]SeI (6). The compounds were characterized in solution by NMR spectroscopy (1H, 13C, 15N, 77Se, 2D experiments). The solid-state molecular structures of 1-3, 4.HBr, 5 and 6 were established by single crystal X-ray diffraction. In all cases T-shaped coordination geometries, i.e. (C,N)SeSe (1, 2), (C,N)SeX (3, 5, 6; X = halogen) or CSeBr(2) (4.HBr), were found. Supramolecular associations in crystals based on hydrogen contacts are discussed.
通过用SO₂Cl₂、溴或碘（摩尔比1:1）处理，[2-{O(CH₂CH₂)₂NCH₂}C₆H₄]₂Se₂（1）和[2-{MeN(CH₂CH₂)₂NCH₂}C₆H₄]₂Se₂（2）中的Se - Se键发生裂解，生成[2-{O(CH₂CH₂)₂NCH₂}C₆H₄]SeX [X = Cl（3）、Br（4）、I（5）]和[2-{MeN(CH₂CH₂)₂NCH₂}C₆H₄]SeI（6）。这些化合物通过核磁共振光谱（¹H、¹³C、¹⁵N、⁷⁷Se、二维实验）在溶液中进行了表征。通过单晶X射线衍射确定了1 - 3、4·HBr、5和6的固态分子结构。在所有情况下，均发现了T形配位几何结构，即（C，N）SeSe（1，2）、（C，N）SeX（3，5，6；X = 卤素）或CSeBr₂（4·HBr）。讨论了基于氢键的晶体中的超分子缔合。
