Synthesis and structure of some cis-and trans-myrtanylstannanes

Co-crystallization of dimethyl N-cyanodithioiminocarbonate and bis[(aqua)-µ 2-hydroxy-n-butyldichlorotin(IV)]

The one-pot reaction of dimethyl N-cyanodithioiminocarbonate, [(MeS)2C=N–C≡N] with n-butyltin trichloride, Sn(n-Bu)Cl3 led to a dinuclear complex [Sn(n-Bu)Cl2(OH)(H2O)]2 which co-crystallized with two [(MeS)2C=N–C≡N] molecules (1). The product was investigated by single-crystal X-ray diffraction analysis. Compound 1 crystallizes in the triclinic space group P 1 ‾ $P\bar{1}$ with a = 6.8048(6), b = 11.0645(9), c = 12.4240(10) Å, α = 66.3120(10), β = 75.6070(10), γ = 72.2940(10)°, V = 807.42(12) Å3, Z = 1 and Z′ = 0.5. In the complex, two aqua-n-butyltin dichloride, [Sn(n-Bu)Cl2(H2O)]+, moieties are bridged by two hydroxide OH− ions. Two inner O2–H2OB⋯Cl2 hydrogen bonds strengthen the dinuclear component which is connected to its neighbours through a O1–H1O⋯Cl1 hydrogen bond pattern giving rise to a network of infinite chains running parallel to the (100) direction. The dimethyl N-cyanodithioiminocarbonate molecules are linked to these infinite chains through O2–H2OA⋯N1 hydrogen bonding interactions of D type. The [(MeS)2C=N–CN] molecules exhibits a minor positional disorder. These hydrogen bonding interactions lead to cyclic patterns generating R 1 1 ( 6 ) ${\text{R}}_{1}^{1}\left(6\right)$ and R 2 2 ( 8 ) ${\text{R}}_{2}^{2}\left(8\right)$ rings. Weak C–H⋯Cl hydrogen bonds also contribute to the stability of the crystal structure.

Chloropinane and Chloromenthene as Novel Solvents for Solubilisation of Natural Substances

Chloropinane and chloromenthene, synthesized from pinene and limonene, respectively, were compared with their non-halogenated analogs and n-hexane for their ability to solubilize natural products of interest such as β-carotenoids, vanillin, and rosmarinic acid. Chloropinane was six times more efficient than hexane for β-carotene solubilization. Chloromenthene was 15 times better than hexane. Vanillin was 20 times more soluble in chloropinane than in hexane. Chloropinane and chloromenthene were 3.5 and 2 times more efficient than hexane for rosmarinic acid solubilization. Obtained from pinene and limonene, two very abundant natural products, and even from their waste byproducts, chloropinane and chloromenthene can be an alternative to solvents from non-renewable resources.