We classify the $6$-dimensional compact nilmanifolds that admit abelian complex structures, and for any such complex structure $J$ we describe the space of symplectic forms which are compatible with $J$.
@article{119315, author = {Luis A. Cordero and Marisa Fern\'andez and Luis Ugarte}, title = {Abelian complex structures on 6-dimensional compact nilmanifolds}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {43}, year = {2002}, pages = {215-229}, zbl = {1078.53020}, mrnumber = {1922123}, language = {en}, url = {http://dml.mathdoc.fr/item/119315} }
Cordero, Luis A.; Fernández, Marisa; Ugarte, Luis. Abelian complex structures on 6-dimensional compact nilmanifolds. Commentationes Mathematicae Universitatis Carolinae, Tome 43 (2002) pp. 215-229. http://gdmltest.u-ga.fr/item/119315/
On certain locally homogeneous Clifford manifolds, Ann. Glob. Anal. Geom. 13 (1995), 289-301. (1995) | MR 1344484 | Zbl 0832.53039
Kähler and symplectic structures on nilmanifolds, Topology 27 (1988), 513-518. (1988) | MR 0976592 | Zbl 0672.53036
Symplectic manifolds with no Kähler structure, Topology 25 (1986), 375-380. (1986) | MR 0842431
Nilpotent complex structures on compact nilmanifolds, Rend. Circolo Mat. Palermo 49 suppl. (1997), 83-100. (1997) | MR 1602971
Compact nilmanifolds with nilpotent complex structure: Dolbeault cohomology, Trans. Amer. Math. Soc. 352 (2000), 5405-5433. (2000) | MR 1665327
Compact locally conformal Kähler nilmanifolds, Geom. Dedicata 21 (1986), 187-192. (1986) | MR 0861196
Lefschetz complex conditions for complex manifolds, preprint, 2001. | MR 1935862
Minimal models of nilmanifolds, Proc. Amer. Math. Soc. 106 (1989), 65-71. (1989) | MR 0946638 | Zbl 0691.53040
Sur les algèbres de Lie nilpotentes de dimension $\leq 7$, J. Geom. Phys. 3 (1986), 119-144. (1986) | MR 0855573
On a class of homogeneous spaces, Amer. Math. Soc. Transl., no. 39 (1951). | MR 0039734
Classification of nilpotent Lie algebras of order $6$, Izv. Vyssh. Uchebn. Zaved. Mat. 4 (1958), 161-171. (1958) | MR 0130326
On the cohomology of compact homogeneous spaces of nilpotent Lie groups, Ann. of Math. 59 (1954), 531-538. (1954) | MR 0064057 | Zbl 0058.02202
Complex structures on nilpotent Lie algebras, J. Pure Appl. Algebra 157 (2001), 311-333. (2001) | MR 1812058 | Zbl 1020.17006
Symplectic manifolds with no Kähler structure, Lecture Notes in Math. 1661, Springer, 1997. | MR 1465676 | Zbl 0891.53001
Complex parallisable manifolds, Proc. Amer. Math. Soc. 5 (1954), 771-776. (1954) | MR 0074064