Аннотация:Triangular lattice quasi-two-dimensional Mott insulators based on BEDT-TTF molecule and its analogies present a possibility to produce exotic phases by coupling charge and spin degrees of freedom. In this work we discuss magnetic properties of one of such materials, k-(BEDTTTF)2Hg(SCN)2Cl, which is found at the border of the phase transition between a Mott insulatorinto a charge ordered state. Our magnetic susceptibility and cantilever magnetisation measurements demonstrate how the charge degree of freedom defines magnetic properties for few different charge phases observed in this material as a function of temperature. Between TCO = 30 K and TS = 24 K we observe charge and spin separation due to one-dimensional charge stripes formed in this material below TCO = 30 K. Below TS = 24 K charge and spin degrees of freedom demonstrate coupling. Spin singlet correlations develop below 24 K, however melting of charge order below 15 K prevents the spin singlet state formation, leaving the system in the inhomogeneous state with charge ordered spin singlet domains and charge and spin fluctuating ones.