title: 6-(2,6-Dimethyl-phen-yl)pyrido[2,3-d]pyrimidin-7-amine.
abstract: In the title compound, C(15)H(14)N(4), the pyrido[2,3-d]pyrimidine system is almost ideally planar (r.m.s. deviation 0.028 Å) with its mean plane almost orthogonal to the 2,6-dimethyl-phenyl plane. The dihedral angle formed by these planes [87.3 (2)°] is close to the predicted value (89.7°) obtained by mol-ecular-mechanics force-field calculations. Only one of the two active amine H atoms participates in hydrogen bonding, which links mol-ecules into centrosymmetric dimers.
authors.forename: Seiji
authors.initials: S
authors.lastname: Nukui
authors.forename: Arnold L
authors.initials: AL
authors.lastname: Rheingold
authors.forename: Antonio
authors.initials: A
authors.lastname: Dipasquale
authors.forename: Alex
authors.initials: A
authors.lastname: Yanovsky